fix: Remove failed to sent events

lib/pages/chat/chat.dart

@@ -772,6 +772,24 @@ class ChatController extends State<ChatPageWithRoom> {
     );
   }
 
+  void deleteErrorEventsAction() async {
+    try {
+      if (selectedEvents.any((event) => event.status != EventStatus.error)) {
+        throw Exception(
+          'Tried to delete failed to send events but one event is not failed to sent',
+        );
+      }
+      for (final event in selectedEvents) {
+        await event.remove();
+      }
+    } catch (e, s) {
+      ErrorReporter(
+        context,
+        'Error while delete error events action',
+      ).onErrorCallback(e, s);
+    }
+  }
+
   void redactEventsAction() async {
     final reasonInput = selectedEvents.any((event) => event.status.isSent)
         ? await showTextInputDialog(
@@ -832,6 +850,7 @@ class ChatController extends State<ChatPageWithRoom> {
     if (isArchived) return false;
     final clients = Matrix.of(context).currentBundle;
     for (final event in selectedEvents) {
+      if (!event.status.isSent) return false;
       if (event.canRedact == false &&
           !(clients!.any((cl) => event.senderId == cl!.userID))) return false;
     }

lib/pages/chat/chat_input_row.dart

@@ -30,6 +30,24 @@ class ChatInputRow extends StatelessWidget {
       mainAxisAlignment: MainAxisAlignment.spaceBetween,
       children: controller.selectMode
           ? <Widget>[
+              if (controller.selectedEvents
+                  .every((event) => event.status == EventStatus.error))
+                SizedBox(
+                  height: 56,
+                  child: TextButton(
+                    style: TextButton.styleFrom(
+                      foregroundColor: Theme.of(context).colorScheme.error,
+                    ),
+                    onPressed: controller.deleteErrorEventsAction,
+                    child: Row(
+                      children: <Widget>[
+                        const Icon(Icons.delete),
+                        Text(L10n.of(context)!.delete),
+                      ],
+                    ),
+                  ),
+                )
+              else
                 SizedBox(
                   height: 56,
                   child: TextButton(

lib/pages/chat/chat_view.dart

@@ -91,6 +91,7 @@ class ChatView extends StatelessWidget {
                   ],
                 ),
               ),
+              if (controller.selectedEvents.single.status.isSent)
                 PopupMenuItem(
                   value: _EventContextAction.report,
                   child: Row(