feat(ios): ai button feature flag (#13280)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **New Features**
  * Added a global API to check the AI button feature flag status.

* **Bug Fixes**
* Improved handling for the AI button feature: the app now checks the
feature flag before proceeding and provides a clear error if the feature
is disabled.

* **Refactor**
  * Removed all AI button presentation and dismissal logic from the app.
* Deleted unused plugin interfaces and registration related to the AI
button feature.

* **Chores**
  * Updated project metadata and build configuration for iOS.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/frontend/apps/ios/App/Podfile.lock

@@ -45,13 +45,13 @@ EXTERNAL SOURCES:
     :path: "../../../../../node_modules/capacitor-plugin-app-tracking-transparency"
 
 SPEC CHECKSUMS:
-  Capacitor: 03bc7cbdde6a629a8b910a9d7d78c3cc7ed09ea7
-  CapacitorApp: febecbb9582cb353aed037e18ec765141f880fe9
-  CapacitorBrowser: 6299776d496e968505464884d565992faa20444a
+  Capacitor: 106e7a4205f4618d582b886a975657c61179138d
+  CapacitorApp: d63334c052278caf5d81585d80b21905c6f93f39
+  CapacitorBrowser: 081852cf532acf77b9d2953f3a88fe5b9711fb06
   CapacitorCordova: 5967b9ba03915ef1d585469d6e31f31dc49be96f
-  CapacitorHaptics: 1f1e17041f435d8ead9ff2a34edd592c6aa6a8d6
-  CapacitorKeyboard: 09fd91dcde4f8a37313e7f11bde553ad1ed52036
-  CapacitorPluginAppTrackingTransparency: 92ae9c1cfb5cf477753db9269689332a686f675a
+  CapacitorHaptics: 70e47470fa1a6bd6338cd102552e3846b7f9a1b3
+  CapacitorKeyboard: 969647d0ca2e5c737d7300088e2517aa832434e2
+  CapacitorPluginAppTrackingTransparency: 2a2792623a5a72795f2e8f9ab3f1147573732fd8
   CryptoSwift: 967f37cea5a3294d9cce358f78861652155be483
 
 PODFILE CHECKSUM: 2c1e4be82121f2d9724ecf7e31dd14e165aeb082