TF-2644 Handle total size exceeded maximum size when drag & drop multiple file to composer

lib/main/localizations/app_localizations.dart

@@ -3917,10 +3917,10 @@ class AppLocalizations {
     );
   }
 
-  String get messageWarningDialogWhenExceedMaximumFileSizeComposer {
+  String get warningMessageWhenExceedGenerallySizeInComposer {
     return Intl.message(
       'Your message is larger than the size generally accepted by third party email systems. If you confirm sending this mail, there is a risk that it gets rejected by your recipient system.',
-      name: 'messageWarningDialogWhenExceedMaximumFileSizeComposer',
+      name: 'warningMessageWhenExceedGenerallySizeInComposer',
     );
   }
 
@@ -3930,4 +3930,18 @@ class AppLocalizations {
       name: 'continueAction',
     );
   }
+
+  String get thisFileCannotBePicked {
+    return Intl.message(
+      'This file cannot be picked.',
+      name: 'thisFileCannotBePicked',
+    );
+  }
+
+  String get loadingPleaseWait {
+    return Intl.message(
+      'Loading... Please wait!',
+      name: 'loadingPleaseWait',
+    );
+  }
 }

lib/main/utils/app_config.dart

@@ -8,7 +8,7 @@ import 'package:tmail_ui_user/main/localizations/app_localizations.dart';
 
 class AppConfig {
   static const int limitCharToStartSearch = 3;
-  static const int maximumMegabytesSizeFileAttachedInComposer = 10;
+  static const int warningAttachmentFileSizeInMegabytes = 10;
 
   static const String appDashboardConfigurationPath = "configurations/app_dashboard.json";
   static const String appFCMConfigurationPath = "configurations/env.fcm";