split the scrolling logging into work,personal, and search

- moved collapse/extend logging with the other scroll logging

bug: 263817965
test: Manual - WW
Change-Id: I9cd57b895c0c2edb7fe39ef98dced574d09a0953

src/com/android/launcher3/allapps/WorkModeSwitch.java

@@ -203,12 +203,10 @@ public class WorkModeSwitch extends LinearLayout implements Insettable,
 
     public void extend() {
         mTextView.setVisibility(VISIBLE);
-        mStatsLogManager.logger().log(LAUNCHER_WORK_FAB_BUTTON_EXTEND);
     }
 
     public void shrink(){
         mTextView.setVisibility(GONE);
-        mStatsLogManager.logger().log(LAUNCHER_WORK_FAB_BUTTON_COLLAPSE);
     }
 
     public int getScrollThreshold() {