Check if it's game package before updating configs

Rename "invalid config" to "inactive config and gate the warning behind
DEBUG flag, as it's expected for games to opt in game modes

Bug: b/240335717
Test: atest GameManagerServiceTests
Change-Id: I0aae9bb4c68e01a8d4797fd6595535467f7d1fe6
Merged-In: I0aae9bb4c68e01a8d4797fd6595535467f7d1fe6