### 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
_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."), "default", "switch"));
				return ERR_PARSE_ERROR;
			}
			tk = _get_token();
			if (tk.type != TK_COLON) {
				_set_expected_error(":");
				return ERR_PARSE_ERROR;
			}
			ControlFlowNode *cf = alloc_node<ControlFlowNode>();
			cf->flow_op = FLOW_OP_DEFAULT;
			BlockNode *default_block = alloc_node<BlockNode>();
			default_block->block_type = BlockNode::BLOCK_TYPE_DEFAULT;
			default_block->parent_block = p_block;
			cf->blocks.push_back(default_block);
			p_block->statements.push_back(cf);
			Error err = _parse_block(default_block, p_function_info, false, true, false);
			if (err) {
				return err;
			}
			return OK;
		} else if (tk.type == TK_CF_DO || tk.type == TK_CF_WHILE) {
			
			
			bool is_do = tk.type == TK_CF_DO;
			BlockNode *do_block = nullptr;
			if (is_do) {