Refactoring AccessibilityManagerService Read & Restore

Implemented parameterized readA11yShortcutTarget and restoreA11yShortcutTarget functions

Test: atest com.android.server.accessibility
Flag: EXEMPT internal refactoring
Bug: 330775538
Change-Id: Ie8bd70ff150299d9a6ad6d1347be5c967e14dea9
5 files changed