### Godot version

4.0.3

### System information

Win7

### Issue description

![image](https://github.com/godotengine/godot/assets/28286958/abec9d3c-e078-424c-9430-d9fe8897aad6)


### Steps to reproduce

1. Create shader
2. Add uint with hex, e.g. 0xffffu

### Minimal reproduction project

N/A
if (r_constant_value) {
			if (shader->constants[p_identifier].initializer && shader->constants[p_identifier].initializer->values.size() == 1) {
				*r_constant_value = shader->constants[p_identifier].initializer->values[0];
			}
		}
		if (r_type) {
			*r_type = IDENTIFIER_CONSTANT;
		}
		return true;
	}
	for (int i = 0; i < shader->functions.size(); i++) {
		if (!shader->functions[i].callable) {
			continue;
		}
		if (shader->functions[i].name == p_identifier) {
			if (r_data_type) {
				*r_data_type = shader->functions[i].function->return_type;
			}
			if (r_array_size) {
				*r_array_size = shader->functions[i].function->return_array_size;
			}
			if (r_type) {
				*r_type = IDENTIFIER_FUNCTION;
			}
			return true;
		}
	}
	return false;
}
bool ShaderLanguage::_validate_operator(OperatorNode *p_op, DataType *r_ret_type, int *r_ret_size) {