Attempt to resolve Possible crash "Reading a state that was created a…

…fter the snapshot was taken or in a snapshot that has not yet been applied"

Closes #1633

app/src/main/java/at/techbee/jtx/ui/detail/DetailViewModel.kt

@@ -128,20 +128,21 @@ class DetailViewModel(application: Application) : AndroidViewModel(application)
         viewModelScope.launch {
             withContext(Dispatchers.Main) { changeState.value = DetailChangeState.LOADING }
 
+            mutableCategories.clear()
+            mutableResources.clear()
+            mutableAttendees.clear()
+            mutableComments.clear()
+            mutableAttachments.clear()
+            mutableAlarms.clear()
+
             withContext(Dispatchers.IO) {
                 originalEntry = databaseDao.getSync(icalObjectId)
                 mutableICalObject = originalEntry?.property
-                mutableCategories.clear()
                 mutableCategories.addAll(databaseDao.getCategoriesSync(icalObjectId))
-                mutableResources.clear()
                 mutableResources.addAll(databaseDao.getResourcesSync(icalObjectId))
-                mutableAttendees.clear()
                 mutableAttendees.addAll(databaseDao.getAttendeesSync(icalObjectId))
-                mutableComments.clear()
                 mutableComments.addAll(databaseDao.getCommentsSync(icalObjectId))
-                mutableAttachments.clear()
                 mutableAttachments.addAll(databaseDao.getAttachmentsSync(icalObjectId))
-                mutableAlarms.clear()
                 mutableAlarms.addAll(databaseDao.getAlarmsSync(icalObjectId))
             }