Relax Instant Apps Settings whitelist enforcement

The strict whitelist of settings for Instant Apps is leading to too much
unintended breakage, remove the enforcement until better infrastructure
can be added to make sure settings that should be whitelisted are.

Bug: 71009655
Test: Coming in a follow up
Change-Id: Ie089dc26cec87207515d15ba881e1a0aa49a9c51