When the Flicker test is unable to launch a split activity it crashes
with a `NullPointerException`.
Change this error into a meaningful error message.
Test: Run `atest WindowManagerSmokeTest`
Change-Id: I1c3c06b3327b94ad6da1a1eabe147182202676a1
platform_testing is moving to AOSP first development. FlickerTests may require access to
in development test apis and cannot be developed in AOSP.
Other minor changes:
- remove FlickerTests from APCT. FlickerTests will use TEST_MAPPING
- use @FlakyTest instead of @Ignore annotation to skip tests
Test: atest FlickerTests
Test: make -j32 continuous_instrumentation_tests
Test: cd frameworks/base/tests/FlickerTests/ && atest :postsubmit
Bug: 112044297
Change-Id: Icc3194ddd9b801034d8797bf2ec60ebff071612c
