TF-4274 Clear encryption keys with account cache.

lib/features/caching/caching_manager.dart

@@ -104,6 +104,7 @@ class CachingManager {
         _oidcConfigurationCacheManager.clear(),
         _tokenOidcCacheManager.clear(),
         _authenticationInfoCacheManager.clear(),
+        _encryptionKeyCacheManager.clear(),
       ], eagerError: true);
     } catch (e) {
       logWarning('CachingManager::clearAccountDataCached: Cannot clear account data cache: $e');

lib/features/login/data/local/encryption_key_cache_manager.dart

@@ -18,6 +18,11 @@ class EncryptionKeyCacheManager extends CacheManagerInteraction {
     return _encryptionKeyCacheClient.getItem(EncryptionKeyCache.keyCacheValue);
   }
 
+  Future<void> clear() {
+    return _encryptionKeyCacheClient
+        .deleteItem(EncryptionKeyCache.keyCacheValue);
+  }
+
   @override
   Future<void> migrateHiveToIsolatedHive() async {
     try {

lib/features/mailbox_dashboard/presentation/controller/mailbox_dashboard_controller.dart

@@ -617,6 +617,7 @@ class MailboxDashBoardController extends ReloadableController
 
     if (shouldPrevent) {
       event.preventDefault();
+      return;
     }
 
     if (PlatformInfo.isWeb) {