Fix split select scroll range when TaskView aren't shifting

- There is an edge case that when ClearAllButton is visible, no split translation is applied, the offset adjustment needs to be calculated differently in that case
- Also, apply the scrollOffset to the TaskViews / ClearAllButton instead of updating min/max scroll

Bug: 200537659
Test: Split right in grid, split left with clear all button, split left without clear all button
Change-Id: I869c448bbec6aec8fa070e47193a692be6f75e84

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

@@ -389,6 +389,7 @@ public class TaskView extends FrameLayout implements Reusable {
     // Used when in SplitScreenSelectState
     private float mSplitSelectTranslationY;
     private float mSplitSelectTranslationX;
+    private float mSplitSelectScrollOffsetPrimary;
 
     private ObjectAnimator mIconAndDimAnimator;
     private float mIconScaleAnimStartProgress = 0;
@@ -1031,6 +1032,11 @@ public class TaskView extends FrameLayout implements Reusable {
         mSplitSelectTranslationY = y;
         applyTranslationY();
     }
+
+    public void setSplitScrollOffsetPrimary(float splitSelectScrollOffsetPrimary) {
+        mSplitSelectScrollOffsetPrimary = splitSelectScrollOffsetPrimary;
+    }
+
     private void setDismissTranslationX(float x) {
         mDismissTranslationX = x;
         applyTranslationX();
@@ -1101,6 +1107,7 @@ public class TaskView extends FrameLayout implements Reusable {
         } else {
             scrollAdjustment += getPrimaryNonGridTranslationProperty().get(this);
         }
+        scrollAdjustment += mSplitSelectScrollOffsetPrimary;
         return scrollAdjustment;
     }