In the multicall function, we set isMulticall to true at the beginning and reset it to false at the end. 
https://github.com/code-423n4/2024-06-size/blob/8850e25fb088898e9cf86f9be1c401ad155bea86/src/libraries/Multicall.sol#L44
However, if another multicall function is called within the initial multicall function, the isMulticall flag will be reset to false when the inner multicall function execution ends. If a subsequent deposit function follows, the cap check will be performed, which violates the multicall function design.
To prevent this, we should not allow an inner multicall function within another multicall function.
