### 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;
			}
			pos = _get_tkpos();
			tk = _get_token();
			if (tk.type == TK_CF_ELSE) {
				block = alloc_node<BlockNode>();
				block->parent_block = p_block;
				cf->blocks.push_back(block);
				err = _parse_block(block, p_function_info, true, p_can_break, p_can_continue);
				if (err) {
					return err;
				}
			} else {
				_set_tkpos(pos); 
			}
		} else if (tk.type == TK_CF_SWITCH) {
			
			tk = _get_token();
			if (tk.type != TK_PARENTHESIS_OPEN) {
				_set_expected_after_error("(", "switch");
				return ERR_PARSE_ERROR;
			}
			ControlFlowNode *cf = alloc_node<ControlFlowNode>();
			cf->flow_op = FLOW_OP_SWITCH;
			Node *n = _parse_and_reduce_expression(p_block, p_function_info);
			if (!n) {
				return ERR_PARSE_ERROR;
			}
			{
				const ShaderLanguage::DataType switch_type = n->get_datatype();