database error notifications need a fallback

[selfisekai]

Bug Description

errors on constructing a database don't appear anywhere if a user dbus socket doesn't exist.

https://github.com/krille-chan/fluffychat/blob/3a554a43b42d735fe553b7780a52d8c17a33053c/lib/utils/matrix_sdk_extensions/flutter_matrix_dart_sdk_database/builder.dart#L39

[ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: SocketException: Connection failed (OS Error: No such file or directory, errno = 2), address = /run/user/1000/bus, port = 0
#0      _NativeSocket.startConnect (dart:io-patch/socket_patch.dart:721)
#1      _NativeSocket.connect (dart:io-patch/socket_patch.dart:984)
#2      _RawSocket.connect (dart:io-patch/socket_patch.dart:1902)
#3      RawSocket.connect (dart:io-patch/socket_patch.dart:21)
#4      DBusClient._openSocket (package:dbus/src/dbus_client.dart:780)
#5      DBusClient._connect (package:dbus/src/dbus_client.dart:800)
#6      DBusClient.callMethod (package:dbus/src/dbus_client.dart:620)
#7      DBusClient.getNameOwner (package:dbus/src/dbus_client.dart:461)
#8      DBusClient._findUniqueName (package:dbus/src/dbus_client.dart:637)
#9      DBusSignalStream._onListen (package:dbus/src/dbus_client.dart:132)
#10     _runGuarded (dart:async/stream_controller.dart:823)
#11     _BroadcastStreamController._subscribe (dart:async/broadcast_stream_controller.dart:207)
#12     _ControllerStream._createSubscription (dart:async/stream_controller.dart:836)
#13     _StreamImpl.listen (dart:async/stream_impl.dart:471)
#14     DBusSignalStream.listen (package:dbus/src/dbus_client.dart:124)
#15     NotificationsClient._subscribeSignals (package:desktop_notifications/src/notifications_client.dart:343)
#16     NotificationsClient.notify (package:desktop_notifications/src/notifications_client.dart:257)
#17     ClientManager.sendInitNotification (package:fluffychat/utils/client_manager.dart:136)
#18     flutterMatrixSdkDatabaseBuilder (package:fluffychat/utils/matrix_sdk_extensions/flutter_matrix_dart_sdk_database/builder.dart:39)
<asynchronous suspension>
#19     Client.init.<anonymous closure> (package:matrix/src/client.dart:1594)
<asynchronous suspension>
#20     Client.init (package:matrix/src/client.dart:1592)
<asynchronous suspension>
#21     InitWithRestoreExtension.initWithRestore (package:fluffychat/utils/init_with_restore.dart:72)
<asynchronous suspension>
#22     Future.wait.<anonymous closure> (dart:async/future.dart:518)
<asynchronous suspension>
#23     ClientManager.getClients (package:fluffychat/utils/client_manager.dart:48)
<asynchronous suspension>
#24     main (package:fluffychat/main.dart:26)
<asynchronous suspension>

Steps to Reproduce

1. idk, do something so the db doesn't work
2. start the app

Expected Behavior

fallback to an in-app dialog? stdout?

App Version

1.19.1

Additional Platform Information

Alpine Linux edge

Additional Context

problem with investigating the actual database error