Revert "Allow transient taskbar to unstash over soft ime"

This reverts commit 9787ae6ad9be6caf2a0d4c5f3ec1a1e950772bda.

Reason for revert: Breaking launcher tests on Tablet

Bug: 259347305

Change-Id: Idfd9e412f143370b6b8a4c6f86aac94d17bc1846
1 file changed