Consider launching task's position on screen in pivot calculation

- Instead of using RecentsViewScroll, put task's position offset versus current scroll as TaskRect calculation, so it's considered when calculating for putting task to full screen
- Revert back RecentsViewScroll to apply before RecentsViewScale
- Added new property in PagedOrientationHandler to apply both primary/secondary param without clearing the other, and renamed an existing method

Fix: 206972618
Test: Quick switching
Test: Launch task from grid, launch side task from carousel overview
Change-Id: I5977975ed1e930ad70b81d83513d8f3a00c0aed4

quickstep/src/com/android/quickstep/views/RecentsView.java

@@ -747,7 +747,7 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
 
             int primarySize = mOrientationHandler.getPrimaryValue(getWidth(), getHeight());
             int scroll = OverScroll.dampedScroll(getUndampedOverScrollShift(), primarySize);
-            mOrientationHandler.set(canvas, CANVAS_TRANSLATE, scroll);
+            mOrientationHandler.setPrimary(canvas, CANVAS_TRANSLATE, scroll);
 
             if (mOverScrollShift != scroll) {
                 mOverScrollShift = scroll;