TF-1865: Create func update sending email in data layer

(cherry picked from commit d2b2f7af4afd4fc817ae404548650182deb9e0ed)

lib/features/email/data/datasource_impl/email_datasource_impl.dart

@@ -203,4 +203,9 @@ class EmailDataSourceImpl extends EmailDataSource {
   Future<void> deleteSendingEmail(AccountId accountId, UserName userName, String sendingId) {
     throw UnimplementedError();
   }
+
+  @override
+  Future<void> updateSendingEmail(AccountId accountId, UserName userName, SendingEmail sendingEmail) {
+    throw UnimplementedError();
+  }
 }

lib/features/email/data/datasource_impl/email_hive_cache_datasource_impl.dart

@@ -267,4 +267,11 @@ class EmailHiveCacheDataSourceImpl extends EmailDataSource {
       return await _sendingEmailCacheManager.deleteSendingEmail(accountId, userName, sendingId);
     }).catchError(_exceptionThrower.throwException);
   }
+
+  @override
+  Future<void> updateSendingEmail(AccountId accountId, UserName userName, SendingEmail sendingEmail) {
+    return Future.sync(() async {
+      return await _sendingEmailCacheManager.updateSendingEmail(accountId, userName, sendingEmail.toHiveCache());
+    }).catchError(_exceptionThrower.throwException);
+  }
 }