composer: vts: configure layer for DisplayDecoration

Some HW may not support crop function for decoration and current API
can't query this capability. Configure decoration layer to full screen
to avoid this limitation.

Bug: 225765061
Test: VtsHalGraphicsComposer3_TargetTest
--gtest_filter=*DisplayDecoration*

Change-Id: If47154adf9d48f9c1b8390b4bee090d8bf40ff3b
(cherry picked from commit 7d55d426)
Merged-In: If47154adf9d48f9c1b8390b4bee090d8bf40ff3b