Remove Windows sandbox resource stamping (#23764)

## Why

The `codex-windows-sandbox` crate was embedding Windows resource
metadata through a package-level `build.rs`. Because that package also
exposes the `codex_windows_sandbox` library, downstream binaries that
link the library could inherit `FileDescription` / `ProductName` values
of `codex-windows-sandbox`.

That made ordinary Codex binaries, including the long-lived `codex.exe`
app-server sidecar, appear as `codex-windows-sandbox` in Windows UI
surfaces such as Task Manager / file properties.

We do not rely on this metadata enough to justify a larger bin-only
resource split, so this removes the resource stamping entirely.

## What changed

- Removed the `windows-sandbox-rs` build script that invoked `winres`.
- Removed the setup manifest that was only consumed by that build
script.
- Removed the `winres` build dependency and corresponding `Cargo.lock` /
`MODULE.bazel.lock` entries.
- Removed the now-unused Bazel build-script data.

## Verification

- `cargo build -p codex-windows-sandbox --bins`
- `cargo build -p codex-cli --bin codex`
- `bazel mod deps --lockfile_mode=update` via Bazelisk, with local
remote-cache-disabling flags because `bazel` is not installed on PATH
here
- `bazel mod deps --lockfile_mode=error` via Bazelisk, with the same
local flags
- Verified rebuilt `codex.exe`, `codex-command-runner.exe`, and
`codex-windows-sandbox-setup.exe` now have blank `FileDescription` /
`ProductName` fields.
- `cargo test -p codex-windows-sandbox` still fails on two legacy
Windows sandbox tests with `CreateRestrictedToken failed: 87` and the
follow-on poisoned test lock; 85 passed, 2 ignored.

MODULE.bazel.lock

@@ -1799,7 +1799,6 @@
       "winnow_0.7.15": "{\"dependencies\":[{\"kind\":\"dev\",\"name\":\"annotate-snippets\",\"req\":\"^0.11.4\"},{\"name\":\"anstream\",\"optional\":true,\"req\":\"^0.6.15\"},{\"name\":\"anstyle\",\"optional\":true,\"req\":\"^1.0.8\"},{\"kind\":\"dev\",\"name\":\"anyhow\",\"req\":\"^1.0.100\"},{\"kind\":\"dev\",\"name\":\"automod\",\"req\":\"^1.0.15\"},{\"kind\":\"dev\",\"name\":\"circular\",\"req\":\"^0.3.0\"},{\"kind\":\"dev\",\"name\":\"criterion\",\"req\":\"^0.5.1\"},{\"name\":\"is_terminal_polyfill\",\"optional\":true,\"req\":\"^1.48.1\"},{\"kind\":\"dev\",\"name\":\"lexopt\",\"req\":\"^0.3.1\"},{\"default_features\":false,\"name\":\"memchr\",\"optional\":true,\"req\":\"^2.7\"},{\"kind\":\"dev\",\"name\":\"proptest\",\"req\":\"^1.6.0\"},{\"kind\":\"dev\",\"name\":\"rustc-hash\",\"req\":\"^2.1.1\"},{\"features\":[\"examples\"],\"kind\":\"dev\",\"name\":\"snapbox\",\"req\":\"^0.6.21\"},{\"kind\":\"dev\",\"name\":\"term-transcript\",\"req\":\"^0.2.0\"},{\"name\":\"terminal_size\",\"optional\":true,\"req\":\"^0.4.3\"}],\"features\":{\"alloc\":[],\"debug\":[\"std\",\"dep:anstream\",\"dep:anstyle\",\"dep:is_terminal_polyfill\",\"dep:terminal_size\"],\"default\":[\"std\"],\"simd\":[\"dep:memchr\"],\"std\":[\"alloc\",\"memchr?/std\"],\"unstable-doc\":[\"alloc\",\"std\",\"simd\",\"unstable-recover\"],\"unstable-recover\":[]}}",
       "winreg_0.10.1": "{\"dependencies\":[{\"name\":\"chrono\",\"optional\":true,\"req\":\"^0.4.6\"},{\"kind\":\"dev\",\"name\":\"rand\",\"req\":\"^0.3\"},{\"name\":\"serde\",\"optional\":true,\"req\":\"^1\"},{\"kind\":\"dev\",\"name\":\"serde_derive\",\"req\":\"^1\"},{\"kind\":\"dev\",\"name\":\"tempfile\",\"req\":\"~3.0\"},{\"features\":[\"impl-default\",\"impl-debug\",\"minwindef\",\"minwinbase\",\"timezoneapi\",\"winerror\",\"winnt\",\"winreg\",\"handleapi\"],\"name\":\"winapi\",\"req\":\"^0.3.9\"}],\"features\":{\"serialization-serde\":[\"transactions\",\"serde\"],\"transactions\":[\"winapi/ktmw32\"]}}",
       "winreg_0.50.0": "{\"dependencies\":[{\"name\":\"cfg-if\",\"req\":\"^1.0\"},{\"name\":\"chrono\",\"optional\":true,\"req\":\"^0.4.6\"},{\"kind\":\"dev\",\"name\":\"rand\",\"req\":\"^0.3\"},{\"name\":\"serde\",\"optional\":true,\"req\":\"^1\"},{\"kind\":\"dev\",\"name\":\"serde_bytes\",\"req\":\"^0.11\"},{\"kind\":\"dev\",\"name\":\"serde_derive\",\"req\":\"^1\"},{\"kind\":\"dev\",\"name\":\"tempfile\",\"req\":\"~3.0\"},{\"features\":[\"Win32_Foundation\",\"Win32_System_Time\",\"Win32_System_Registry\",\"Win32_Security\",\"Win32_Storage_FileSystem\",\"Win32_System_Diagnostics_Debug\"],\"name\":\"windows-sys\",\"req\":\"^0.48.0\"}],\"features\":{\"serialization-serde\":[\"transactions\",\"serde\"],\"transactions\":[]}}",
-      "winres_0.1.12": "{\"dependencies\":[{\"name\":\"toml\",\"req\":\"^0.5\"},{\"features\":[\"winnt\"],\"kind\":\"dev\",\"name\":\"winapi\",\"req\":\"^0.3\"}],\"features\":{}}",
       "winsafe_0.0.19": "{\"dependencies\":[],\"features\":{\"comctl\":[\"ole\"],\"dshow\":[\"oleaut\"],\"dwm\":[\"uxtheme\"],\"dxgi\":[\"ole\"],\"gdi\":[\"user\"],\"gui\":[\"comctl\",\"shell\",\"uxtheme\"],\"kernel\":[],\"mf\":[\"oleaut\"],\"ole\":[\"user\"],\"oleaut\":[\"ole\"],\"shell\":[\"oleaut\"],\"taskschd\":[\"oleaut\"],\"user\":[\"kernel\"],\"uxtheme\":[\"gdi\",\"ole\"],\"version\":[\"kernel\"]}}",
       "winsplit_0.1.0": "{\"dependencies\":[{\"kind\":\"dev\",\"name\":\"doc-comment\",\"req\":\"^0.3.3\"}],\"features\":{\"default\":[\"std\"],\"std\":[]}}",
       "wiremock_0.6.5": "{\"dependencies\":[{\"kind\":\"dev\",\"name\":\"actix-rt\",\"req\":\"^2.10.0\"},{\"name\":\"assert-json-diff\",\"req\":\"^2.0.2\"},{\"features\":[\"attributes\",\"tokio1\"],\"kind\":\"dev\",\"name\":\"async-std\",\"req\":\"^1.13.2\"},{\"name\":\"base64\",\"req\":\"^0.22\"},{\"name\":\"deadpool\",\"req\":\"^0.12.2\"},{\"name\":\"futures\",\"req\":\"^0.3.31\"},{\"name\":\"http\",\"req\":\"^1.3\"},{\"name\":\"http-body-util\",\"req\":\"^0.1\"},{\"features\":[\"full\"],\"name\":\"hyper\",\"req\":\"^1.7\"},{\"features\":[\"tokio\",\"server\",\"http1\",\"http2\"],\"name\":\"hyper-util\",\"req\":\"^0.1\"},{\"name\":\"log\",\"req\":\"^0.4\"},{\"name\":\"once_cell\",\"req\":\"^1\"},{\"name\":\"regex\",\"req\":\"^1\"},{\"features\":[\"json\"],\"kind\":\"dev\",\"name\":\"reqwest\",\"req\":\"^0.12.23\"},{\"name\":\"serde\",\"req\":\"^1\"},{\"features\":[\"derive\"],\"kind\":\"dev\",\"name\":\"serde\",\"req\":\"^1\"},{\"name\":\"serde_json\",\"req\":\"^1\"},{\"features\":[\"rt\",\"macros\",\"net\"],\"name\":\"tokio\",\"req\":\"^1.47.1\"},{\"features\":[\"macros\",\"rt-multi-thread\"],\"kind\":\"dev\",\"name\":\"tokio\",\"req\":\"^1.47.1\"},{\"name\":\"url\",\"req\":\"^2.5\"}],\"features\":{}}",