### 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
}
						tk = _get_token();
					}
					if (tk.type != TK_IDENTIFIER) {
						_set_error(RTR("Expected an identifier for argument name."));
						return ERR_PARSE_ERROR;
					}
					param_name = tk.text;
					ShaderLanguage::IdentifierType itype;
					if (_find_identifier(func_node->body, false, builtins, param_name, (ShaderLanguage::DataType *)nullptr, &itype)) {
						if (itype != IDENTIFIER_FUNCTION) {
							_set_redefinition_error(String(param_name));
							return ERR_PARSE_ERROR;
						}
					}
					if (has_builtin(p_functions, param_name)) {
						_set_redefinition_error(String(param_name));
						return ERR_PARSE_ERROR;
					}
					FunctionNode::Argument arg;
					arg.type = param_type;
					arg.name = param_name;
					arg.type_str = param_struct_name;
					arg.precision = param_precision;
					arg.qualifier = param_qualifier;
					arg.tex_argument_check = false;
					arg.tex_builtin_check = false;
					arg.tex_argument_filter = FILTER_DEFAULT;
					arg.tex_argument_repeat = REPEAT_DEFAULT;
					arg.is_const = param_is_const;