LSE: Fix tracking stores for merged default values.

Test: Additional test in 530-checker-lse.
Test: m test-art-host-gtest
Test: testrunner.py --host --optimizing
Bug: 166246377
Bug: 77906240
Change-Id: Ia31099fdfcdf416cb35c9baac6e7c13572e81eb7
2 files changed