Ensures that we end back to home animation on the last animation frame.

This fixes the bug where user performs double swipe back to home and we
have a floating window on the screen.

Fixes: 277515917
Test: From an app, back swipe to home, and then immediately back swipe
      to home again
Flag: NONE
Change-Id: If312ee55efeaadde896511c6d449826368b15a84
diff --git a/quickstep/src/com/android/quickstep/util/RectFSpringAnim.java b/quickstep/src/com/android/quickstep/util/RectFSpringAnim.java
index 251b756..245dde2 100644
--- a/quickstep/src/com/android/quickstep/util/RectFSpringAnim.java
+++ b/quickstep/src/com/android/quickstep/util/RectFSpringAnim.java
@@ -281,7 +281,15 @@
             if (mRectScaleAnim.canSkipToEnd()) {
                 mRectScaleAnim.skipToEnd();
             }
+            mCurrentScaleProgress = mRectScaleAnim.getSpring().getFinalPosition();
+
+            // Ensures that we end the animation with the final values.
+            mRectXAnimEnded = false;
+            mRectYAnimEnded = false;
+            mRectScaleAnimEnded = false;
+            onUpdate();
         }
+
         mRectXAnimEnded = true;
         mRectYAnimEnded = true;
         mRectScaleAnimEnded = true;