Fix talkback speak "double tap to activate" on LabeledSeekBarPreference

- SeekBarPreference should be unselectable
- remove unnecessary handling of Summary
- set currect Title color when preference is enabled and unselectable

Bug: 230553896
Test: robotest
Change-Id: Ie5d819088dc3c435005ddd00e232b2f6992b234a
5 files changed