Revert "Use WMStateHelper in testImeVisibleAfterRotation"

This reverts commit 153d2e1fa1c434cf531635390acfa95805ad500e.

Reason for revert: Droidmonitor created revert due to b/417826790. Will be verifying through ABTD before submission.

Bug: 417826790
Change-Id: Ic35582c78600acebe057b672090a197686bdae9a
1 file changed