Produce an error when a class has the same name as a Singleton

If you somehow end up with a Singleton.gd that looks like this:

	extends Node

	class_name Singleton

	func foo():
	    pass

You will get an error when using it in another file:

	extends Node2D

	func _init():
	    # Parser Error: Non-static function "foo" can only be called from an instance.
	    Singleton.foo()

This error is confusing. This patch ensures that an error on the class_name line will be produced:

    Parse Error: The class "Singleton" conflicts with the AutoLoad singleton of the same name, and is therefore redundant. Remove the class_name declaration to fix this error.

Fixes #28187.

0 files changed, 0 insertions, 0 deletions