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Pass empty srcRectHint if overlay is present
Launcher should pass an empty srcRectHint to Shell via stopSwipePipToHome if overlay is present, so that Shell know that srcRectHint is being "simulated" for the enter PiP animation with an app icon overlay. Shell will recalculate the simulated src-rect based on appBounds and aspect ratio of the destination bounds. Bug: 352773027 Flag: EXEMPT bugfix Test: swipe PiP to home from Maps with fixed rotation (90 and 270) Change-Id: I5f89c5af9d6b8a66725e346d09e7b3d84044bb4c