text is selected whenever launcher gets hidden and is then set to visible (#2315)

src/modules/launcher/PowerLauncher/MainWindow.xaml.cs

@@ -169,6 +169,12 @@ namespace PowerLauncher
                         {
                             _viewModel.LastQuerySelected = true;
                         }          
+                        
+                        // to select the text so that the user can continue to type
+                        if(!String.IsNullOrEmpty(_launcher.TextBox.Text))
+                        {
+                            _launcher.TextBox.SelectAll();
+                        }
                     }
                 }
             };