Revert function name change

This CL renames 2 function calls, from currentStateHasOffscreenApps() to the function's original name, currentStateSupportsOffscreenApps().

This revert is for 25Q3-release branch only. Fixes b/422912855. Will be fixed forward in main branch.

Bug: 415827083
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:a1a72dd98476678164b7c12e65548de3cd626862)
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:59226bc7ef6d1e9c28e24f16a663aef55344000e)
Merged-In: Iec28e2339f32b93b09f330dee77b4e90a846cc52
Change-Id: Iec28e2339f32b93b09f330dee77b4e90a846cc52