Expose Browser Use requirements through the app server (#35033)

## What changed

- Parse the `browser_use.disable_auto_review` setting from layered
  `requirements.toml` configuration.
- Return the setting as `browserUse.disableAutoReview` from
  `configRequirements/read` and publish it in the generated JSON and TypeScript
  schemas.

## Testing

- Add an app-server RPC test covering the Browser Use requirement.

GitOrigin-RevId: 5749d5bc17bcc5b582bf7ed59b8e5b72d6c8f7fc

codex-rs/app-server-protocol/src/protocol/v2/tests.rs

@@ -1852,6 +1852,7 @@ fn config_requirements_granular_allowed_approval_policy_is_marked_experimental()
             allow_appshots: None,
             allow_remote_control: None,
             computer_use: None,
+            browser_use: None,
             feature_requirements: None,
             hooks: None,
             enforce_residency: None,