Fix testForceStopPackageWontRestartProcess fail for low ram device

Extends Launch activity and broadcast receive 5s instead of 2s for low ram device.

Bug: 154438070
Test: run cts-on-gsi -m CtsAppTestCases
      -t android.app.cts.ActivityManagerTest#testForceStopPackageWontRestartProcess
Change-Id: Ia1e9092c28d906c5c6d32e5bf9840b6f3aebdc35
1 file changed