Auto select text when entering edit mode

Author: yaira2

src/Files.App.Controls/Omnibar/Omnibar.Events.cs

@@ -17,6 +17,7 @@ private void Omnibar_SizeChanged(object sender, SizeChangedEventArgs e)
 		private void AutoSuggestBox_GotFocus(object sender, RoutedEventArgs e)
 		{
 			IsFocused = true;
+			_textBox.SelectAll();
 		}
 
 		private void AutoSuggestBox_LostFocus(object sender, RoutedEventArgs e)

src/Files.App.Controls/Omnibar/Omnibar.cs

@@ -144,9 +144,6 @@ protected void ChangeMode(OmnibarMode? oldMode, OmnibarMode newMode)
 			_textChangeReason = OmnibarTextChangeReason.ProgrammaticChange;
 			ChangeTextBoxText(newMode.Text ?? string.Empty);
 
-			// Move cursor of the TextBox to the tail
-			_textBox.Select(_textBox.Text.Length, 0);
-
 			VisualStateManager.GoToState(newMode, "Focused", true);
 			newMode.OnChangingCurrentMode(true);