### 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.
}
			if (_lookup_symbol_from_base(base.type, p_symbol, is_function, r_result) == OK) {
				return OK;
			}
		} break;
		case GDScriptParser::COMPLETION_TYPE_ATTRIBUTE: {
			if (context.node == nullptr || context.node->type != GDScriptParser::Node::TYPE) {
				break;
			}
			const GDScriptParser::TypeNode *type = static_cast<const GDScriptParser::TypeNode *>(context.node);
			GDScriptParser::DataType base_type;
			const GDScriptParser::IdentifierNode *prev = nullptr;
			for (const GDScriptParser::IdentifierNode *E : type->type_chain) {
				if (E->name == p_symbol && prev != nullptr) {
					base_type = prev->get_datatype();
					break;
				}
				prev = E;
			}
			if (base_type.kind != GDScriptParser::DataType::CLASS) {
				GDScriptCompletionIdentifier base;
				if (!_guess_expression_type(context, prev, base)) {
					break;
				}
				base_type = base.type;
			}
			if (_lookup_symbol_from_base(base_type, p_symbol, is_function, r_result) == OK) {
				return OK;
			}
		} break;