Don't set override display info for ActivityView

ActivityView content should never be letter- or pillar-boxed
and it doesn't have overscan areas, so we can skip setting
display override info for a virtual display that backs it.

Bug: 72220802
Test: Manually resize with ActivityView demo app
Change-Id: I211449eaea50ec5d3214d63e7eb93a1d2ed2c0fd
5 files changed