### 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_CURLY_BRACKET_OPEN) {
					_set_error(RTR("Expected a '{' to begin function."));
					return ERR_PARSE_ERROR;
				}
				current_function = name;
#ifdef DEBUG_ENABLED
				keyword_completion_context = CF_BLOCK;
#endif 
				Error err = _parse_block(func_node->body, builtins);
				if (err) {
					return err;
				}
#ifdef DEBUG_ENABLED
				keyword_completion_context = CF_GLOBAL_SPACE;
#endif 
				if (func_node->return_type != DataType::TYPE_VOID) {
					BlockNode *block = func_node->body;
					if (_find_last_flow_op_in_block(block, FlowOperation::FLOW_OP_RETURN) != OK) {
						_set_error(vformat(RTR("Expected at least one '%s' statement in a non-void function."), "return"));
						return ERR_PARSE_ERROR;
					}
				}
				current_function = StringName();
			}
		}
		tk = _get_token();
	}
#ifdef DEBUG_ENABLED
	if (check_device_limit_warnings && uniform_buffer_exceeded_line != -1) {