Add isStayOnPlayStorePage() in IPlayStoreHelper

Bug: 407487741

Test: Make pts && scroll/playstore

Branch: 25D1

Build: 13351441
> https://atp.googleplex.com/test_runs/00615051342695628800

passed count: 49, other fail count: 2, flakyBase: 51, passed ratio: 96.07843 %


Build: 13356942
>  https://atp.googleplex.com/test_runs/01776980046557216768

passed count: 49, other fail count: 2, flakyBase: 51, passed ratio: 96.07843 %


Build: 13364001
>  https://atp.googleplex.com/test_runs/06388666064984604672

passed count: 49, other fail count: 2, flakyBase: 51, passed ratio: 96.07843 %

Change-Id: I5f796e77a17bf9718df272db5a804a43af08fe71
1 file changed