Merge "Use the global default cpp_std." into main am: 675512ab0c am: 625cc65998

Original change: https://android-review.googlesource.com/c/platform/packages/inputmethods/LatinIME/+/3112039

Change-Id: Id3343ac2d6f4444678e108d4f62f8a286aa667a7
Signed-off-by: Automerger Merge Worker <[email protected]>