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