[layout compilation] Disable precompiled layouts when preferCodeIntegrity is set

This feature involves generating and loading code on the
application. Applications may use the preferCodeIntegrity flag to indicate they
do not want this behavior, so we need to respect this preference. We also
disable loading precompiled layouts for privapps.

Bug: 111895153
Change-Id: I5c563e9f6eb7dd5eb7aac7df3838888f71b38866