Merge "Merge "Bump default experimental from gnu++2a to gnu++2b." into main...

Merge "Merge "Bump default experimental from gnu++2a to gnu++2b." into main am: a1d45b8e am: 3cdf0f06" into udc-qpr-dev-plus-aosp am: 3314967f

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/2832038



Change-Id: I47d21dc05dc0bd934f181c3e0011c8ec119d25ce
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>