OpenJDK 11: Merging in java.lang.String (checkIndex() helper)

This is part of merging upstream changes from OpenJDK 11.28. This CL
updates test expectations for 100-reflect2 test.

Bug: 202962059
Test: art/test/testrunner/testrunner.py --host -b -t 100-reflect2
Change-Id: I3b41b0dbb7698420f2effb222aa0b52e8961dda0
1 file changed