### 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
return ERR_PARSE_ERROR;
									}
									ConstantNode::Value v;
									_find_identifier(p_block, false, p_function_info, vn->name, nullptr, nullptr, nullptr, nullptr, nullptr, &v);
									if (constants.has(v.sint)) {
										_set_error(vformat(RTR("Duplicated case label: %d."), v.sint));
										return ERR_PARSE_ERROR;
									}
									constants.insert(v.sint);
								}
							} else if (flow->flow_op == FLOW_OP_DEFAULT) {
								continue;
							} else {
								return ERR_PARSE_ERROR;
							}
						} else {
							return ERR_PARSE_ERROR;
						}
					}
					break;
				}
			}
		} else if (tk.type == TK_CF_CASE) {
			
			if (p_block && p_block->block_type == BlockNode::BLOCK_TYPE_CASE) {
				_set_tkpos(pos);
				return OK;
			}
			if (!p_block || (p_block->block_type != BlockNode::BLOCK_TYPE_SWITCH)) {
				_set_error(vformat(RTR("'%s' must be placed within a '%s' block."), "case", "switch"));