Merge "Accept repeated locale as an input of LocaleList construction." into rvc-dev am: 5cacc10912 am: 830e2cbbce am: 20e2db6d6b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12513781

Change-Id: I540d534472bcb51cc371f8a90112f4b92bf1f11c