fix: Display error when user tries to send too large file

assets/l10n/intl_en.arb

@@ -2518,5 +2518,6 @@
     "enterInviteLinkOrMatrixId": "Enter invite link or Matrix ID...",
     "reopenChat": "Reopen chat",
     "noBackupWarning": "Warning! Without enabling chat backup, you will lose access to your encrypted messages. It is highly recommended to enable the chat backup first before logging out.",
-    "noOtherDevicesFound": "No other devices found"
+    "noOtherDevicesFound": "No other devices found",
+    "fileIsTooBigForServer": "The server reports that the file is too large to be sent."
 }

lib/pages/chat/chat.dart

@@ -446,6 +446,7 @@ class ChatController extends State<Chat> {
   }
 
   void voiceMessageAction() async {
+    final scaffoldMessenger = ScaffoldMessenger.of(context);
     if (PlatformInfos.isAndroid) {
       final info = await DeviceInfoPlugin().androidInfo;
       if (info.version.sdkInt < 19) {
@@ -486,7 +487,16 @@ class ChatController extends State<Chat> {
           'waveform': result.waveform,
         },
       },
+    ).catchError((e) {
+      scaffoldMessenger.showSnackBar(
+        SnackBar(
+          content: Text(
+            (e as Object).toLocalizedString(context),
+          ),
+        ),
       );
+      return null;
+    });
     setState(() {
       replyEvent = null;
     });

lib/pages/chat/send_file_dialog.dart

@@ -4,6 +4,7 @@ import 'package:flutter_gen/gen_l10n/l10n.dart';
 import 'package:future_loading_dialog/future_loading_dialog.dart';
 import 'package:matrix/matrix.dart';
 
+import 'package:fluffychat/utils/localized_exception_extension.dart';
 import 'package:fluffychat/utils/size_string.dart';
 import '../../utils/resize_image.dart';
 
@@ -47,7 +48,7 @@ class SendFileDialogState extends State<SendFileDialog> {
       )
           .catchError((e) {
         scaffoldMessenger.showSnackBar(
-          SnackBar(content: Text(e.toLocalizedString())),
+          SnackBar(content: Text((e as Object).toLocalizedString(context))),
         );
         return null;
       });

lib/utils/localized_exception_extension.dart

@@ -19,6 +19,9 @@ extension LocalizedExceptionExtension on Object {
           return (this as MatrixException).errorMessage;
       }
     }
+    if (this is FileTooBigMatrixException) {
+      return L10n.of(context)!.fileIsTooBigForServer;
+    }
     if (this is BadServerVersionsException) {
       final serverVersions = (this as BadServerVersionsException)
           .serverVersions