### Tested versions

- Reproducible in: 4.2.1 Stable
- Testing working functionality in: 4.2 Stable and 4.1 Stable

### System information

Windows 11 - Godot v4.2.1-stable - Vulkan (Forward+)

### Issue description

I have a timer as shown in the attached image. When I tried to drag the timer to the script and use the dot notation to autocomplete the in-built functions of the Timer class, I didn't get suggestions.

While in v4.1 opening the same project gave intellisense.
![image](https://github.com/godotengine/godot/assets/29101013/5e5088d9-8e61-4d4b-a5b4-8deb37cd915b)


### Steps to reproduce

1. Create a Timer
2. Drag and drop in the gdscript editor.
3. Try to invoke the start method.

### Minimal reproduction project (MRP)

[Test DnD.zip](https://github.com/godotengine/godot/files/13658039/Test.DnD.zip)

.replace(": Array[String]", "")
									 .replace(": Node", "")
									 .replace(": CharFXTransform", "")
									 .replace(":=", "=")
									 .replace(" -> void", "")
									 .replace(" -> bool", "")
									 .replace(" -> int", "")
									 .replace(" -> PortType", "")
									 .replace(" -> String", "")
									 .replace(" -> Object", "");
	}
	processed_template = processed_template.replace("_BASE_", p_base_class_name)
								 .replace("_CLASS_SNAKE_CASE_", p_class_name.to_snake_case().validate_identifier())
								 .replace("_CLASS_", p_class_name.to_pascal_case().validate_identifier())
								 .replace("_TS_", _get_indentation());
	scr->set_source_code(processed_template);
	return scr;
}
Vector<ScriptLanguage::ScriptTemplate> GDScriptLanguage::get_built_in_templates(StringName p_object) {
	Vector<ScriptLanguage::ScriptTemplate> templates;
#ifdef TOOLS_ENABLED
	for (int i = 0; i < TEMPLATES_ARRAY_SIZE; i++) {
		if (TEMPLATES[i].inherit == p_object) {
			templates.append(TEMPLATES[i]);
		}
	}
#endif
	return templates;
}
static void get_function_names_recursively(const GDScriptParser::ClassNode *p_class, const String &p_prefix, HashMap<int, String> &r_funcs) {