[PT Run] Resolve text alignment issues for RTL input languages (not for mixed strings) (#5170)

* Added logic to switch TextBox/TextBlock flow direction on language change

* Move event handler to separate method

* Moved code to function

src/modules/launcher/PowerLauncher/ViewModel/MainViewModel.cs

@@ -273,7 +273,6 @@ namespace PowerLauncher.ViewModel
 
         public string QueryText { get; set; } = String.Empty;
 
-
         /// <summary>
         /// we need move cursor to end when we manually changed query
         /// but we don't want to move cursor to end when query is updated from TextBox. 
@@ -794,6 +793,20 @@ namespace PowerLauncher.ViewModel
             return string.Empty;
         }
 
+        public static FlowDirection GetLanguageFlowDirection()
+        {
+            bool isCurrentLanguageRightToLeft = System.Windows.Input.InputLanguageManager.Current.CurrentInputLanguage.TextInfo.IsRightToLeft;
+
+            if (isCurrentLanguageRightToLeft)
+            {
+                return FlowDirection.RightToLeft;
+            }
+            else
+            {
+                return FlowDirection.LeftToRight;
+            }
+        }
+
         protected virtual void Dispose(bool disposing)
         {
             if (!_disposed)