Avoid triggering rollback checks if no ComponentSyncMode::Full components have been updated

[cBournhonesque]

Scenario:

• spawn entity E with a C1 (ComponentSyncMode::Full) and C2 (ComponentSyncMode::Simple)
• send an update for C2
• rollback_check runs for E because the confirmed_tick has been updated.

We should only update the confirmed.tick if the update contained a ComponentSyncMode::Full update. (confirmed.tick is only used for prediction/interpolation)

Example: the player entity constantly runs rollback_checks in the spaceships example because the Player component keeps getting updated.