Use WMStateHelper in testImeVisibleAfterRotation This adds WindowManagerStateHelper to waitForActivityOrientation, instead of waiting for idle sync, in testImeVisibleAfterRotation. Flag: EXEMPT testfix Bug: 417553159 Test: atest InputMethodServiceTest#testImeVisibleAfterRotation Change-Id: I8c0dca9d076b4037f31dc6c063c15178fc5cec6e