Reapply "Guard new APIs with __builtin_available"

This reverts commit 027650fb.

Ignore-AOSP-First: this is for 24q1-release

Bug: 317676192
Test: manual check (wifi hal service should work with U GSI)
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:e40a10779c74290c504a38799f81eb6e0a06610d)
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:fde6b58b4f9efb8998364f2bcfa51cc1c1e48834)
Merged-In: I0211eb1f7f8c74a43143cbed7c32c065eabf39ed
Change-Id: I0211eb1f7f8c74a43143cbed7c32c065eabf39ed