Fix issue where classes that fail verification have kStatusNotReady.

Classes that failed verification at compile time were not getting the
status kStatusRetryVerificationAtRuntime. This is because
GetCompiledClass would return false for anything that wasn't verified,
making it look like the compiler had not touched the class at all, when
it should have failed verification.

Test: mm test-art-host
Bug: 64392002

Change-Id: I9687bcb53c60c1fb0a2df2f642ce9102cb488822