Remove some usage of IGBPs in the ICamera.

This change removes the usage of IGBPs in ICamera and the surrounding
code where reasonable. This is part of a refactor outline at go/warren-buffers.

BYPASS_IGBP_IGBC_API_REASON: this CL is part of the migration.
Bug: 342197849
Test: atest android.hardware.cts.CameraTest
Flag: com.android.graphics.libgui.flags.wb_libcameraservice

Change-Id: I06fbf42e6a249f3b30266ac5b3dad0bdbc4f585a