TF-2189 Create collapsed signature when edit email in Sending Queue on iOS

Signed-off-by: dab246 <tdvu@linagora.com>
(cherry picked from commit 4f5e82173c2a6070d89f3debc00bc35ffb3021db)

lib/features/composer/presentation/composer_controller.dart

@@ -291,6 +291,14 @@ class ComposerController extends BaseController {
     }
   }
 
+  @override
+  void handleExceptionAction({Failure? failure, Exception? exception}) {
+    super.handleExceptionAction(failure: failure, exception: exception);
+    if (failure is GetAllIdentitiesFailure) {
+      _handleGetAllIdentitiesFailure(failure);
+    }
+  }
+
   void _listenStreamEvent() {
     uploadInlineImageWorker = ever(uploadController.uploadInlineViewState, (state) {
       log('ComposerController::_listenStreamEvent()::uploadInlineImageWorker: $state');
@@ -2089,4 +2097,15 @@ class ComposerController extends BaseController {
     log('ComposerController::addAttachmentFromDropZone: $attachment');
     uploadController.initializeUploadAttachments([attachment]);
   }
+
+  void _handleGetAllIdentitiesFailure(GetAllIdentitiesFailure failure) async {
+    log('ComposerController::_handleGetAllIdentitiesFailure:failure: $failure');
+    if (composerArguments.value?.emailActionType == EmailActionType.editSendingEmail && PlatformInfo.isMobile) {
+      final signatureContent = await htmlEditorApi?.getSignatureContent();
+      log('ComposerController::_handleGetAllIdentitiesFailure:signatureContent: $signatureContent');
+      if (signatureContent?.isNotEmpty == true) {
+        await _applySignature(signatureContent!);
+      }
+    }
+  }
 }