Dynamic Select-To-Speak and Talkback setFragment style on SUW Welcome Screen.

Check the APK target SDK to use corresponding fragment to avoid wrong
status before these app release to R.

Bug: 147997595
Bug: 148394224
Bug: 148438898
Test: Manual test
Change-Id: I3a4ca6b8566f3f731b651e1f785f4fc18319ca89