Fix splitPrimaryScrollOffset in RTL

Fix: 225165124
Test: split select in RTL and non-RTL, check min/max scroll
Change-Id: I5fb13e39560d9dceb4a53c9c79a355f72faf3dba
diff --git a/quickstep/src/com/android/quickstep/views/RecentsView.java b/quickstep/src/com/android/quickstep/views/RecentsView.java
index 6bb20fc..a6b8897 100644
--- a/quickstep/src/com/android/quickstep/views/RecentsView.java
+++ b/quickstep/src/com/android/quickstep/views/RecentsView.java
@@ -3872,9 +3872,10 @@
         float taskSplitScrollOffsetPrimary = 0f;
         float clearAllSplitScrollOffsetPrimar = 0f;
         if (isSplitPlaceholderFirstInGrid()) {
-            taskSplitScrollOffsetPrimary = mSplitPlaceholderSize;
+            taskSplitScrollOffsetPrimary = mIsRtl ? mSplitPlaceholderSize : -mSplitPlaceholderSize;
         } else if (isSplitPlaceholderLastInGrid()) {
-            clearAllSplitScrollOffsetPrimar = -mSplitPlaceholderSize;
+            clearAllSplitScrollOffsetPrimar =
+                    mIsRtl ? -mSplitPlaceholderSize : mSplitPlaceholderSize;
         }
 
         for (int i = 0; i < getTaskViewCount(); i++) {