Add regression test for loading locale data with unknown/invalid locale

Test: LocaleDataTest
Test: StringTest
Bug: 129070579
Merged-In: I7d070f0a015239670acaa3b02ea4da919b5cf10f
Change-Id: I7d070f0a015239670acaa3b02ea4da919b5cf10f
(cherry picked from commit afe00b2f2be215ce74f920363a47daafb6e907ff)
2 files changed