### 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;
			}
			if (!is_do) {
				BlockNode *block = alloc_node<BlockNode>();
				block->parent_block = p_block;
				cf->expressions.push_back(n);
				cf->blocks.push_back(block);
				p_block->statements.push_back(cf);
				Error err = _parse_block(block, p_function_info, true, true, true);
				if (err) {
					return err;
				}
			} else {
				cf->expressions.push_back(n);
				cf->blocks.push_back(do_block);
				p_block->statements.push_back(cf);
				tk = _get_token();
				if (tk.type != TK_SEMICOLON) {
					_set_expected_error(";");
					return ERR_PARSE_ERROR;
				}
			}
		} else if (tk.type == TK_CF_FOR) {
			
			tk = _get_token();
			if (tk.type != TK_PARENTHESIS_OPEN) {
				_set_expected_after_error("(", "for");
				return ERR_PARSE_ERROR;
			}
			ControlFlowNode *cf = alloc_node<ControlFlowNode>();