ms-osk-add-shortcut-dialog: Improve UI/UX

Gotam Gorabhrequested to merge
gautham_x/phosh-mobile-settings:shortcut-minor-fix into main
  • Align the selection focus of the shortcut key to center.
  • Ensure the shortcut key selection is cleared on clear operation or invalid shortcut
  • Set follows-content-size to True to ensure the dialog takes up enough vertical space to fit its content.

Signed-off-by: Gotam Gorabh gautamy672@gmail.com

Edited by Gotam Gorabh

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