GDScript: Fix "Mismatched external parser" for autoloads

[dalexeev]

• Fixes "Parser bug: Mismatched external parser" due to autoload path including unnecessary ./ #94098.

MRP: autoload-path-mrp.zip

GDScript makes the assumption that some core APIs (like Resource.get_path(), ScriptServer, AutoloadInfo) return already simplified paths. I checked the usage and I think this is the most appropriate place to fix the bug.

This PR also resolves the inconsistency between parse() and parse_binary() introduced in #87124¹:

godot/modules/gdscript/gdscript_parser.cpp

Lines 358 to 362 in 82cedc8

	tokenizer = text_tokenizer;
	tokenizer->set_cursor_position(cursor_line, cursor_column);
	script_path = p_script_path.simplify_path();
	current = tokenizer->scan();

godot/modules/gdscript/gdscript_parser.cpp

Lines 415 to 417 in 82cedc8

	tokenizer = buffer_tokenizer;
	script_path = p_script_path;
	current = tokenizer->scan();

Footnotes

1. Formally, the bug was introduced in GDScript: Reintroduce binary tokenization on export #87634, since it was merged 1 day later. In any case, I think this is an accidental mistake due to parallel development. ↩

[akien-mga]

Thanks!