Remove test scenario dependency on IME

When expanded, SearchView automatically brings in soft
keyboard. The test flow around dismissing the keyboard
before collapsing the action view was flaky.

Test: run tests in KeyEventsTestCaseWithToolbar and KeyboardShortcutsTestCaseWithWindowDecor
Bug: 34956766
Change-Id: I20abf348e1fe8df08a4319082ac75ebab65eabfe
3 files changed