If an error occurs while loading a replay, it's *supposed* to show a popup "hey do you wanna continue with error tolerance", and it does do this. But because of spaghetti in the replay state code, it also immediately tries to reload the replay without input, as a consequence of trying to reset to the game's default state.
Now the replay load system has a proper game state for "replay load failed", with nice presentation and explicit formatting and 10% less italian cuisine.
* Use new Subs.CVar helper
Removes manual config OnValueChanged calls, removes need to remember to manually unsubscribe.
This both reduces boilerplate and fixes many issues where subscriptions weren't removed on entity system shutdown.
* Fix a bunch of warnings
* More warning fixes
* Use new DateTime serializer to get rid of ISerializationHooks in changelog code.
* Get rid of some more ISerializationHooks for enums
* And a little more
* Apply suggestions from code review
Co-authored-by: 0x6273 <0x40@keemail.me>
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Co-authored-by: 0x6273 <0x40@keemail.me>
