fix marking first item in dm thread as read

app/src/main/java/awais/instagrabber/viewmodels/DirectThreadViewModel.kt

@@ -169,22 +169,20 @@ class DirectThreadViewModel(
         val items = thread.items
         if (items.isNullOrEmpty()) return successEventResObjectLiveData
         val directItem = items.firstOrNull { (_, userId) -> userId != currentUser.pk } ?: return successEventResObjectLiveData
-        val lastSeenAt = thread.lastSeenAt
-        if (lastSeenAt != null) {
-            val seenAt = lastSeenAt[currentUser.pk] ?: return successEventResObjectLiveData
+        val lastSeenAt = thread.lastSeenAt ?: return threadManager.markAsSeen(directItem, viewModelScope)
+        val seenAt = lastSeenAt[currentUser.pk] ?: return threadManager.markAsSeen(directItem, viewModelScope)
         try {
-                val timestamp = seenAt.timestamp ?: return successEventResObjectLiveData
+            val timestamp = seenAt.timestamp ?: return threadManager.markAsSeen(directItem, viewModelScope)
             val itemIdMatches = seenAt.itemId == directItem.itemId
             val timestampMatches = timestamp.toLong() >= directItem.getTimestamp()
             if (itemIdMatches || timestampMatches) {
                 return successEventResObjectLiveData
             }
+            return threadManager.markAsSeen(directItem, viewModelScope)
         } catch (ignored: Exception) {
             return successEventResObjectLiveData
         }
     }
-        return threadManager.markAsSeen(directItem, viewModelScope)
-    }
 
     private val successEventResObjectLiveData: MutableLiveData<Resource<Any?>>
         get() {