sf: Fix multi-display render engine context transitions

Avoid protected context for
-- Non-hwc virtual displays.
-- Secure display
-- Secure camera

Switch to non-protected context in case of non-hwc displays. For GPU
to write into non-protected buffer, context need to be non-protected.

CRs-Fixed: 2605268
Change-Id: Ifbafad112981b66ca2a452c029cab3c5c8ba7e7d