### 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 (next_token.type == TK_BRACKET_OPEN) {
							_get_token(); 
							_get_token(); 
							next_token = _get_token();
						}
						_set_tkpos(prev_pos);
						ShaderNode::Varying &var = shader->varyings[identifier];
						String error;
						if (is_token_operator_assign(next_token.type)) {
							if (!_validate_varying_assign(shader->varyings[identifier], &error)) {
								_set_error(error);
								return nullptr;
							}
						} else {
							switch (var.stage) {
								case ShaderNode::Varying::STAGE_UNKNOWN: {
									if (var.type < TYPE_INT) {
										if (current_function == varying_function_names.vertex) {
											_set_error(vformat(RTR("Varying with '%s' data type may only be used in the 'fragment' function."), get_datatype_name(var.type)));
										} else {
											_set_error(vformat(RTR("Varying '%s' must be assigned in the 'fragment' function first."), identifier));
										}
										return nullptr;
									}
								} break;
								case ShaderNode::Varying::STAGE_VERTEX:
									if (current_function == varying_function_names.fragment || current_function == varying_function_names.light) {
										var.stage = ShaderNode::Varying::STAGE_VERTEX_TO_FRAGMENT_LIGHT;
									}