### 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
first = false;
					if (tk.type != TK_IDENTIFIER && tk.type != TK_BRACKET_OPEN) {
						_set_error(RTR("Expected an identifier or '[' after type."));
						return ERR_PARSE_ERROR;
					}
					if (tk.type == TK_BRACKET_OPEN) {
						Error error = _parse_array_size(p_block, p_function_info, false, &decl.size_expression, &array_size, &unknown_size);
						if (error != OK) {
							return error;
						}
						decl.size = array_size;
						fixed_array_size = true;
						tk = _get_token();
					}
				}
				if (tk.type != TK_IDENTIFIER) {
					_set_error(RTR("Expected an identifier."));
					return ERR_PARSE_ERROR;
				}
				StringName name = tk.text;
				ShaderLanguage::IdentifierType itype;
				if (_find_identifier(p_block, true, p_function_info, name, (ShaderLanguage::DataType *)nullptr, &itype)) {
					if (itype != IDENTIFIER_FUNCTION) {
						_set_redefinition_error(String(name));
						return ERR_PARSE_ERROR;
					}
				}
				decl.name = name;
#ifdef DEBUG_ENABLED
				if (check_warnings && HAS_WARNING(ShaderWarning::UNUSED_LOCAL_VARIABLE_FLAG) && p_block) {