fix: crash if channel you were last in no longer exists on new boot

Signed-off-by: Infi <infi@infi.sh>

app/src/main/java/chat/revolt/screens/chat/views/channel/ChannelScreenViewModel.kt

@@ -164,10 +164,15 @@ class ChannelScreenViewModel @Inject constructor(
             null
         } else {
             channel?.server?.let { serverId ->
+                try {
                     RevoltAPI.members.getMember(serverId, selfUser.id!!) ?: fetchMember(
                         serverId,
                         selfUser.id
                     )
+                } catch (e: Exception) {
+                    Log.e("ChannelScreenViewModel", "Failed to fetch member", e)
+                    null
+                }
             }
         }