refactor(sentry): standardize exceptions to prevent Sentry minification

lib/features/composer/domain/exceptions/compose_email_exception.dart

@@ -1,3 +1,15 @@
-class SendingEmailCanceledException implements Exception {}
+import 'package:core/domain/exceptions/app_base_exception.dart';
 
-class SavingEmailToDraftsCanceledException implements Exception {}
+class SendingEmailCanceledException extends AppBaseException {
+  SendingEmailCanceledException([super.message]);
+
+  @override
+  String get exceptionName => 'SendingEmailCanceledException';
+}
+
+class SavingEmailToDraftsCanceledException extends AppBaseException {
+  SavingEmailToDraftsCanceledException([super.message]);
+
+  @override
+  String get exceptionName => 'SavingEmailToDraftsCanceledException';
+}

lib/features/composer/domain/exceptions/set_method_exception.dart

@@ -1,10 +1,12 @@
-
 import 'package:jmap_dart_client/jmap/core/error/set_error.dart';
 import 'package:jmap_dart_client/jmap/core/id.dart';
+import 'package:core/domain/exceptions/app_base_exception.dart';
 
-class SetMethodException implements Exception {
-
+class SetMethodException extends AppBaseException {
   final Map<Id, SetError> mapErrors;
 
-  SetMethodException(this.mapErrors);
-}
+  SetMethodException(this.mapErrors) : super('Errors: $mapErrors');
+
+  @override
+  String get exceptionName => 'SetMethodException';
+}