Expose auto-review ignore rules in config requirements (#37519)

## What changed

- Add `ignoreRules` to `AutoReviewRequirements` in the app-server v2 protocol and generated schemas.
- Return configured `auto_review.ignore_rules` values from `configRequirements/read`.
- Document that listed models ignore saved command-prefix approvals.

## Testing

- Extend config mapping and RPC tests to cover `ignore_rules`.

GitOrigin-RevId: ed74fbba7693176fe09b161bbee2cb27847e0e1e

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

@@ -413,6 +413,7 @@ pub struct ConfigRequirements {
 #[ts(export_to = "v2/")]
 pub struct AutoReviewRequirements {
     pub required_on_models: Option<Vec<String>>,
+    pub ignore_rules: Option<Vec<String>>,
 }
 
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq, JsonSchema, TS)]