[Media] Removes placeRelatively parameter from OffsetOverscrollEffect

The thinking is that placing relatively is _never_ the right behavior
for this effect since drag deltas don't change their sign based on
LayoutDirection.

Bug: 403558944
Test: manually verified that media in compose still works correctly both
in the swipe to dismiss and swipe to reveal cases in the compose gallery
app
Flag: EXEMPT code not in use in production

Change-Id: Ie276704c6c3d7673a99a52da1d8b8c6429538e06