Fix: ViewGroupGetChildLocalHitRegionTest fail on cuttlefish auto devices

In the test, the expected Matrix's translation is computed by
View.getLocationInWindow which only returns interger results.
But the test view's actual matrix is 7.5 pixel.
To fix the test failure, we specify the test view's translationX/Y
in px unit instead.

Bug: 296551016
Test: atest ViewGroupGetChildLocalHitRegionTest
Change-Id: I170fba4057edf8b1be9029513a74de955aeb83e0