Fix test execution on hwasan builds

THe navbar becomes invisible during the rotation, and becomes visible
again once the rotation animation finishes.

This CL fixes the wm flicker tests after migrating they were migrated to
hwasan-userdebug builds.

Bug: 161858082
Test: atest FlickerTests
Change-Id: I5c7fcff58a09fda2e7f1e2c10f05b48f055c3685