fix(ci): resolve mock.module() cross-file leakage in test suite

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/hooks/legacy-plugin-toast/hook.test.ts

@@ -53,7 +53,9 @@ function createEvent(type: string, parentID?: string) {
 }
 
 async function importFreshModule() {
-  return import(`./hook?t=${Date.now()}-${Math.random()}`)
+  const module = await import(`./hook?t=${Date.now()}-${Math.random()}`)
+  mock.restore()
+  return module
 }
 
 describe("createLegacyPluginToastHook", () => {