Fix pop-up shadow drawn in the wrong place with Skia pipeline

Fix a bug in DrawShadow matrix calculation. Recorded matrix does
not need to be applied, because parent display lists have already
replayed matrix transformations.

Test: added a new HWUI unit test that is passing only after this fix
Bug: 33103723
Change-Id: I7a47dbe879df6b9e5920a47c0e1168d9902a3e70