Fix flicker tests assumption on whether the devices uses a task bar or a nav bar

With ComAndroidWmShellEnableTaskbarNavbarUnificationLaunch, foldables always use a task bar, regardless of being folded or not.

Fixes: 333866305
Test: atest FlickerTestsIme:com.android.server.wm.flicker.ime.CloseImeOnGoHomeTest#cujCompleted[ROTATION_0_GESTURAL_NAV] -- --abi arm64-v8a \
Change-Id: I4b45b9d1142bab4a2a82c4964a3e6053d888626c
2 files changed