multiple runtime bugfixes for 1.5.5+65

lib/view/pages/share_intent/share_chat_picker.dart

@@ -2,7 +2,6 @@ import 'dart:async';
 
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
-import 'package:nextcloud/nextcloud.dart';
 import 'package:persistent_bottom_nav_bar_v2/persistent_bottom_nav_bar_v2.dart';
 
 import '../../../api/errors/error_mapper.dart';
@@ -10,7 +9,6 @@ import '../../../api/marianumcloud/talk/room/get_room_response.dart';
 import '../../../api/marianumcloud/talk/send_message/send_message.dart';
 import '../../../api/marianumcloud/talk/send_message/send_message_params.dart';
 import '../../../api/marianumcloud/talk/share_files_to_chat.dart';
-import '../../../api/marianumcloud/webdav/webdav_api.dart';
 import '../../../routing/app_routes.dart';
 import '../../../share_intent/pending_share.dart';
 import '../../../share_intent/remote_file_ref.dart';
@@ -137,12 +135,7 @@ Future<void> _externalShareFlow(
   PendingShare share,
 ) async {
   if (share.hasFiles) {
-    try {
-      final webdav = await WebdavApi.webdav;
-      await webdav.mkcol(PathUri.parse('/$talkShareFolder'));
-    } catch (_) {
-      // mkcol throws when the folder already exists; ignore.
-    }
+    await ensureTalkShareFolder();
     if (!context.mounted) return;
     await pushScreen(
       context,