Fix incorrect timeout test

The test was verifying a timeout for the wrong API call.  Instead, only
the reportImpression() call should have timed out.

Test: atest CtsAdServicesDebuggableDeviceTestCases
Bug: 306300393
Change-Id: I0b6a4b3f5a0e4dacd7edd858b0d5c969e96bcf91
4 files changed