Only allow finite numbers in Range.value.

[Jordyfel]

Fixes #81057.

Since this property represents a number in a range, it doesn't make sense for it to be inf or nan.

Bugsquad edit: Fixes #80755

[AThousandShips]

LGTM

[AThousandShips]

Does this solve #80755 for manually edited values in the files? Otherwise I think a dedicated fix is required, including if broken past versions exist

[KoBeWi]

By manually editing you can make the scene completely unopenable in the editor, so I don't think it's a concern. We should only make sure that the data saved by the editor itself is valid.
Also #80755 is difficult to break something by accident. I only opened the issue because I was testing a PR that made it easier to trigger. We also didn't get other reports of broken scenes by using inputting invalid numbers.

[MewPurPur]

To be clear about what I said there, I've only broken my scenes before because I was goofing around and seeing how much I can break Godoh - not intentionally.

[akien-mga]

Thanks!