The option for entering page already has complete check condition.
Update the same check logic to isSeachable in setting page to hide
page when there's no touchpad connected.
Also apply check on trackpadTouchGesture.
Test: verify on device
Bug: 346497646
Flag: EXEMPT bugfix
Change-Id: I1730c7bd1fd2615dc1725ec0cc32293254e5b54a
Also fixes a bug in TrackpadTouchGestureSettings that used the wrong
preference ID for search indexing.
Bug: 300611520
Test: Verified on device
Flag: NA
Change-Id: I62ccf6d0b410be977f59f101edc5c42233d9474a
Settings search collects all index data through SearchIndexablesProvider.
Users can enter keywords to query these index data in Settings search.
Bug: 289967511
Test: build pass
Change-Id: Ib934becbf8bc433489ca81aea10cecbcc5584a77
1. basic trackpad settings
2. trackpad gestures settgins
3. use feature flag to control gesture settings page.
Bug: 247080509
Test: local test
Change-Id: Ia7184eeb7670e5d807cb553929679972e54d8c92