### 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)

if (p_context.type != GDScriptParser::COMPLETION_SUPER_METHOD) {
						r_type.type = p_context.current_class->get_datatype();
					} else {
						r_type.type = p_context.current_class->base_type;
					}
					found = true;
				}
			} break;
			case GDScriptParser::Node::IDENTIFIER: {
				const GDScriptParser::IdentifierNode *id = static_cast<const GDScriptParser::IdentifierNode *>(p_expression);
				found = _guess_identifier_type(p_context, id, r_type);
			} break;
			case GDScriptParser::Node::DICTIONARY: {
				
				const GDScriptParser::DictionaryNode *dn = static_cast<const GDScriptParser::DictionaryNode *>(p_expression);
				Dictionary d;
				bool full = true;
				for (int i = 0; i < dn->elements.size(); i++) {
					GDScriptCompletionIdentifier key;
					if (_guess_expression_type(p_context, dn->elements[i].key, key)) {
						if (!key.type.is_constant) {
							full = false;
							break;
						}
						GDScriptCompletionIdentifier value;
						if (_guess_expression_type(p_context, dn->elements[i].value, value)) {
							if (!value.type.is_constant) {
								full = false;
								break;
							}