### 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
options.push_back("hint_roughness_b");
						options.push_back("hint_roughness_g");
						options.push_back("hint_roughness_gray");
						options.push_back("hint_roughness_normal");
						options.push_back("hint_roughness_r");
						options.push_back("hint_screen_texture");
						options.push_back("hint_normal_roughness_texture");
						options.push_back("hint_depth_texture");
						options.push_back("source_color");
					}
					if (current_uniform_repeat == REPEAT_DEFAULT) {
						options.push_back("repeat_enable");
						options.push_back("repeat_disable");
					}
				}
				for (int i = 0; i < options.size(); i++) {
					ScriptLanguage::CodeCompletionOption option(options[i], ScriptLanguage::CODE_COMPLETION_KIND_PLAIN_TEXT);
					r_options->push_back(option);
				}
			}
			if (!completion_base_array && !current_uniform_instance_index_defined) {
				ScriptLanguage::CodeCompletionOption option("instance_index", ScriptLanguage::CODE_COMPLETION_KIND_PLAIN_TEXT);
				option.insert_text = "instance_index(0)";
				r_options->push_back(option);
			}
		} break;
	}
	return ERR_PARSE_ERROR;
}
String ShaderLanguage::get_error_text() {