Set default metadata/XML/attribute set value before parsing

Make sure all game mode and game intervention allow flags
are set properly before parsing from metadata, xml file and
attribute set.

Bug: 243455130
Test: atest GameManagerServiceTests
Change-Id: I0e9c484fe73141521da42e57c60e6bf722d9744a
Merged-In: I0e9c484fe73141521da42e57c60e6bf722d9744a