LWOQuickBuildComponent uses the activity component's functions; DLU's
QuickBuildComponent now derives ActivityComponent. Its RebuildComponent row
(the activity among it) loads in LoadDataFromTemplate and the level's
overrides in LoadConfigData, out of Entity::Initialize. It still writes its
own replica data (same construction and update bytes) and spawns its
activator as before.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>