Allow code to sink right before the TryBoundary

Instructions before TryBoundary entry are not considered to be inside
of a try. Therefore, we can allow to sink instructions at that level.

Bug: 226143661
Test: art/test/testrunner/testrunner.py --host --64 --optimizing -b
Change-Id: If29a53cfd94e1d0a7afb79d0e9fb7e76b337c493
2 files changed