Stream apply_patch changes (#17862)

Adds new events for streaming apply_patch changes from responses api.
This is to enable clients to show progress during file writes.

Caveat: This does not work with apply_patch in function call mode, since
that required adding streaming json parsing.

codex-rs/tui/src/chatwidget.rs

@@ -6649,6 +6649,7 @@ impl ChatWidget {
             | EventMsg::PlanDelta(_)
             | EventMsg::AgentReasoningDelta(_)
             | EventMsg::TerminalInteraction(_)
+            | EventMsg::PatchApplyUpdated(_)
             | EventMsg::ExecCommandOutputDelta(_) => {}
             _ => {
                 tracing::trace!("handle_codex_event: {:?}", msg);
@@ -6864,6 +6865,7 @@ impl ChatWidget {
             EventMsg::RawResponseItem(_)
             | EventMsg::ItemStarted(_)
             | EventMsg::AgentMessageContentDelta(_)
+            | EventMsg::PatchApplyUpdated(_)
             | EventMsg::ReasoningContentDelta(_)
             | EventMsg::ReasoningRawContentDelta(_)
             | EventMsg::DynamicToolCallRequest(_)