### Godot version

4.0 dev_build

### System information

Ubuntu 22.04.1

### Issue description

The "Lookup Symbol" button don't appears for custorm class names.
Related issues: #68475,  #73167.
I tried apply #68311, #69473 and #73196. It don't helps.
The `Ctrl+LMB` works right for all cases.

### Steps to reproduce

Right click to the `CustomClassA` symbol in the `custom_class_b.gd` anywhere. The `Lookup Symbol` button don't appears in the context menu.

### Minimal reproduction project

Example from  #68475.
r_result.type = ScriptLanguage::LOOKUP_RESULT_CLASS;
			r_result.class_name = Variant::get_type_name(t);
			return OK;
		}
	}
	if ("PI" == p_symbol || "TAU" == p_symbol || "INF" == p_symbol || "NAN" == p_symbol) {
		r_result.type = ScriptLanguage::LOOKUP_RESULT_CLASS_CONSTANT;
		r_result.class_name = "@GDScript";
		r_result.class_member = p_symbol;
		return OK;
	}
	GDScriptParser parser;
	parser.parse(p_code, p_path, true);
	GDScriptParser::CompletionContext context = parser.get_completion_context();
	context.base = p_owner;
	
	if (context.type != GDScriptParser::COMPLETION_ATTRIBUTE) {
		
		
		if (GDScriptUtilityFunctions::function_exists(p_symbol) || "assert" == p_symbol || "preload" == p_symbol) {
			r_result.type = ScriptLanguage::LOOKUP_RESULT_CLASS_METHOD;
			r_result.class_name = "@GDScript";
			r_result.class_member = p_symbol;
			return OK;
		}
	}
	GDScriptAnalyzer analyzer(&parser);
	analyzer.analyze();
	if (context.current_class && context.current_class->extends.size() > 0) {
		bool success = false;