Updating IME tests

Updating all IME tests with new assertions (visibleLayersShownMoreThanOneConsecutiveTime and visibleWindowsShownMoreThanOneConsecutiveEntry). For the visibleWindowsShownMoreThanOneConsecutiveEntry, adding a new param to it to ignore some windows as the InputMethod window should be ignored as it only shows one time. Same behaviour for visibleLayersShownMoreThanOneConsecutiveEntry.
Also enabling some assertions that were disabled that seems to work.

Test: atest FlickerTests
Bug: b/171049649
Change-Id: I15a6e4934dfc64fd9449d4ff15ce7b1ab881f324