ART: Skip all-threads dump on abort if locks are held

The thread-list locks are not recursive. Skip the dump on abort
if the locks are already held. Thread state will still be captured
on-device by a tombstone.

Bug: 134037466
Bug: 134167395
Test: m
Test: m test-art-host-gtest-runtime_test
Merged-In: I15ba38a018a39f1cc12577cdf8fb94876b96bbaa
Change-Id: I15ba38a018a39f1cc12577cdf8fb94876b96bbaa