Fix: Fixed an issue where the home key wouldn't move focus when renaming items in List View

[nunescostr]

Summary
The Home and end key weren't being acknowledged by the textBox.Keydown on the List View, Grid View and Tile View Layouts. To fix this I replaced it with textBox.PreviewKeyDown, this way the handling is not being consumed before it reaches the controller. I had to implement specific handling for these keys on the switch case already implemented on the GridLayoutPage.xaml.cs.

Resolved / Related Issues

• Were these changes approved in an issue or discussion with the project maintainers? In order to prevent extra work, feature requests and changes to the codebase must be approved before the pull request will be reviewed. This prevents extra work for the contributors and maintainers.
  Closes Bug: Home key doesn't move to the 1st character when renaming item in List View layout #15048

Validation
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[hishitetsu]

Pressing the Home key several times now returns the cursor to the top of the textbox, but pressing it once still only returns the cursor to the top of the visible area.

[hishitetsu]

I have found this PR makes it impossible to select text with Shift+Up or Shift+Down.

[yaira2]

Does changing back to KeyDown resolve that issue?

[hishitetsu]

KeyDown will make the selection, but only to the middle of the text box, not to the beginning or end of the text box in case of Grid/Tiles/List view. Also, the original issue will no longer be fixed.