Refactor Utilities#isTablet to Utilities#isLargeScreen

The utility checks the dimension of the screen rather than the device
itself. This means that on a foldable it would return true when unfolded
even though it is not a tablet.

Test: Checked code usages to see if expectations were correct.
Fixes: 267285637
Merged-In: I9ab45d65e08a6024729819724e8661e00419ebdd
Change-Id: I2f2754e1753daf0941e327cf8bf866946cd36f78
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:fffb49c8f60824ec7e8b5854a6be5b673f0e0ade)
Merged-In: I2f2754e1753daf0941e327cf8bf866946cd36f78