Remove the gear icon and change tapping event

* For fix the conflicts in pi-dev, cherry pick the ag/3944480 in
  master and merge the conflict.
* Remove the gear icon in "currently connected" section.
* Change the tapping event in "currently connected" section.
  When tapping device in this section, take user to device detail page.
* Add test to verify when ConnectedBluetoothDeviceUpdater add preference
  the shouldHideSecondTarget() is return true.

Bug: 78490845
Test: make -j40 RunSettingsRoboTests
Change-Id: I25f8455def3c38e24dea9af9e9e29ba37c250f67