[automerger skipped] Merge "Tighten bootclasspath_fragment property...

[automerger skipped] Merge "Tighten bootclasspath_fragment property validation" into sc-dev am: 9dbfa1c1 -s ours am: 012652b9 -s ours

am skip reason: Merged-In I8855d6e5365ef0b55490e90e7b6c0081cf070ee5 with SHA-1 588e22a6 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/build/soong/+/14703935

Change-Id: I7f62240c10eeb232974a938fa9cb221f8a839f64