fix(android): pan gesture velocity fix

Author: farfromrefug

packages/gesturehandler/platforms/android/java/com/swmansion/gesturehandler/PanGestureHandler.java

@@ -235,6 +235,8 @@ protected void onHandle(MotionEvent event) {
       mStartY = mLastY;
       mOffsetX = 0;
       mOffsetY = 0;
+      mLastVelocityX = 0;
+      mLastVelocityY = 0;
       mVelocityTracker = VelocityTracker.obtain();
       addVelocityMovement(mVelocityTracker, event);
       begin();