CTS: Lock AssistantActivity orientation to prevent relaunch

The "springboard" nature of AssistantActivity using EXTRA_LAUNCH_NEW_TASK
means it makes sense for AssistantActivity to be locked orientation and avoid
configuration changes. Configuration changes cause the AssistantActivity to be
relaunched completely when the test expects it to be simply resumed, preventing
the test conditions from being validated.

Bug: 73888548
Test: Passes regardless of default device orientation.
Change-Id: I4fbaa2255b94ceb8732ad31889f4b6169ea2dd82
1 file changed