Type functions cause crashes and other issues if used on a type that contains the function

[JokeCommit]

Type functions seem to have issues when you use a type that a function is inside of. Here's a case that causes a crash 100% of the time:

--!strict
type function Type(t)
	return t
end

local Table = {}

function Table.Foo<T>(arg: T)
	return arg :: Type<T>
end

local test = Table.Foo(Table) --crashes upon typing

Here's a case that doesn't crash but causes a type error:

Type functions with containing types can be used for OOP. Here's what I was trying to do when I encountered this issue:

[skanosue]

Hi there! The crash has been confirmed to be fixed by a flag which was flipped last week, although the erroneous type errors are still present.