Vector2.clamped doesn't handle INFs

[razcore-rad]

Godot version:
3.1.1.stable.official

Vector2.clamped returns nans (Not a Number) when operating on vectors with INF components while clamp global function seems to work just fine, I'd expect Vector2.clamped to be able to handle INFs as well.

[razcore-rad]

I think this is a more general problem with INF Vector math as Vector2(INF, 0) * Vector2.ZERO also gives Vector2(-nan, 0) say. I haven't tried Vector3 yet

[KoBeWi]

Still valid in 173ebe4

Although if it's impossible to fix it without math hacks (affecting performance), it should just be documented.