Mocking CrashRecoveryProperties in test

This test started failing as it was not able to access
CrashRecoveryProperties. Mocking them in the test fixed it.

Bug: b/323272250
Test: atest PackageWatchdogTest:com.android.server.PackageWatchdogTest

Change-Id: I6ec10adfc17cb85e1c370ff76d08c0aa7e14c11f