Fix default window type for Advanced Protection dialog

The previous window type FIRST_APPLICATION_WINDOW was incorrect and
could have caused the dialog to be dimmed and TalkBack to not be
focused. The current window type TYPE_APPLICATION fixes these issues by
correctly placing the dialog in the window hierarchy.

Bug: 404595933
Bug: 404439964
Bug: 353531691
Test: visual
Test: checked with TalkBack
Flag: EXEMPT bug fix
Change-Id: I520220c1527868b6fc928eaa35184ba9b0159e06