Update a11y recommended timeout api.

Update api name to getRecommendedTimeoutMillis.
Api returns timeout for interactive or non-interactive controls.
Also provide the options for a11y service to specify two kinds of
timeout.

Bug: 111210981
Test: atest SettingsBackupTest
Test: atest AccessibilityManagerTest
Test: atest AccessibilityServiceInfoTest
Change-Id: I37d35796fd72bb4d6628a6bb33b111987f321552