[Settings] Add preference click metric log

- Move the log point of onPreferenceTreeClick from DashboardFragment to
  it's super class InstrumentedPreferenceFragment for better coverage.
- Write the preference click metric log in PreferenceController handling
  case in DashboardFragment which will skip super class's log point.

Bug: 137559984
Test: robotest
Change-Id: I67178f613c74f755e20fc9dc41319974cb02e83c