[False-Positive]: "ignores return value" false positive

### Describe the issue:

slither says that i'm ignoring the return value

https://github.com/rainprotocol/rain.flow/actions/runs/6138590436/job/16655608341?pr=5#step:4:57965

```
FlowERC1155._previewFlow(Evaluable,uint256[][]) (src/concrete/erc1155/FlowERC1155.sol#133-153) ignores return value by (stackTop,tuplesPointer) = stackBottom.consumeSentinelTuples(stackTop,RAIN_FLOW_ERC1155_SENTINEL,3) (src/concrete/erc1155/FlowERC1155.sol#143)
FlowERC1155._previewFlow(Evaluable,uint256[][]) (src/concrete/erc1155/FlowERC1155.sol#133-153) ignores return value by (stackTop,tuplesPointer) = stackBottom.consumeSentinelTuples(stackTop,RAIN_FLOW_ERC1155_SENTINEL,3) (src/concrete/erc1155/FlowERC1155.sol#148)
```

but it isn't ignored, both return values are used

https://github.com/rainprotocol/rain.flow/pull/5/files#diff-0bfdd537a599fa870763c6915d4a43184ba4ef54bc038e33bd9d3545a445c4b0R143

### Code example to reproduce the issue:

https://github.com/rainprotocol/rain.flow/pull/5/files#diff-0bfdd537a599fa870763c6915d4a43184ba4ef54bc038e33bd9d3545a445c4b0R142

### Version:

latest according to github actions

### Relevant log output:

_No response_