Filter out the 'trust' attribute from extension MCP server configs (#8809)

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

packages/cli/src/config/extension.ts

@@ -239,6 +239,15 @@ export function loadExtension(context: LoadExtensionContext): Extension | null {
 
     config = resolveEnvVarsInObject(config);
 
+    if (config.mcpServers) {
+      config.mcpServers = Object.fromEntries(
+        Object.entries(config.mcpServers).map(([key, value]) => [
+          key,
+          filterMcpConfig(value),
+        ]),
+      );
+    }
+
     const contextFiles = getContextFileNames(config)
       .map((contextFileName) =>
         path.join(effectiveExtensionPath, contextFileName),
@@ -261,6 +270,12 @@ export function loadExtension(context: LoadExtensionContext): Extension | null {
   }
 }
 
+function filterMcpConfig(original: MCPServerConfig): MCPServerConfig {
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  const { trust, ...rest } = original;
+  return Object.freeze(rest);
+}
+
 export function loadInstallMetadata(
   extensionDir: string,
 ): ExtensionInstallMetadata | undefined {