### 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_BRACKET_OPEN) {
						Error error = _parse_array_size(nullptr, constants, true, nullptr, &arg_array_size, nullptr);
						if (error != OK) {
							return error;
						}
						tk = _get_token();
					}
					arg.array_size = arg_array_size;
					func_node->arguments.push_back(arg);
					if (tk.type == TK_COMMA) {
						tk = _get_token();
						
					} else if (tk.type != TK_PARENTHESIS_CLOSE) {
						_set_expected_error(",", ")");
						return ERR_PARSE_ERROR;
					}
				}
				if (p_functions.has(name)) {
					
					if (func_node->arguments.size() > 0) {
						_set_error(vformat(RTR("Function '%s' expects no arguments."), String(name)));
						return ERR_PARSE_ERROR;
					}
					if (func_node->return_type != TYPE_VOID) {
						_set_error(vformat(RTR("Function '%s' must be of '%s' return type."), String(name), "void"));
						return ERR_PARSE_ERROR;
					}
				}