Make UiTestAutomationBridge see non-important views again

This problem was introduced in I74df9c24. The intention of the
change was still let UiTestAutomationBridge see the
non-important views, but there were bugs in the implementation:

1. AccessibilityManagerService was not really updating
   mIncludeNotImportantViews when mIsAutomation is true

2. Wrong constant is used to set the flag

Change-Id: Ia0a2e9ed9720bd0ea3a563e0b492e870a6ec1586