### 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)

}
		}
		return false;
	} else {
		const GDScriptParser::ClassNode *cl = parser.get_tree();
		HashMap<int, String> funcs;
		get_function_names_recursively(cl, "", funcs);
		for (const KeyValue<int, String> &E : funcs) {
			r_functions->push_back(E.value + ":" + itos(E.key));
		}
	}
#ifdef DEBUG_ENABLED
	if (r_safe_lines) {
		const HashSet<int> &unsafe_lines = parser.get_unsafe_lines();
		for (int i = 1; i <= parser.get_last_line_number(); i++) {
			if (!unsafe_lines.has(i)) {
				r_safe_lines->insert(i);
			}
		}
	}
#endif
	return true;
}
bool GDScriptLanguage::supports_builtin_mode() const {
	return true;
}
bool GDScriptLanguage::supports_documentation() const {
	return true;
}
int GDScriptLanguage::find_function(const String &p_function, const String &p_code) const {