Add missing public API to layoutlib AccessibilityManager

Layoutlib has its own AccessibilityManager which replaces the one from
the framework. This adds missing public APIs which can cause crashes if
called from Studio preview.

Bug: 247080771
Test: N/A
Change-Id: Ie32b9e62f768fda5c342ee3f775c865a96673a82
(cherry picked from commit 7cb83bd34afa99802c2eadf8ce0de3de21cbce83)
Merged-In: Ie32b9e62f768fda5c342ee3f775c865a96673a82
1 file changed