contract-locks-ether Should look for `withdraw` functions in the inheritance/extension graph

[alexroan]

Detector Title contract-locks-ether

To Reproduce

1. Create a base contract with a withdraw function
2. Create an child contract with a payable function
3. This detector captures the child contract despite a withdraw function being present

Expected behavior Withdraw function should be found in the inheritance graph

[TilakMaddy]

when you say create a withdraw function, does it actually mean a function that sends eth away using address.call{value: xxx}() / transfer /send ?

[TilakMaddy]

@alexroan Please checkout the fix in the branch and close the issue if it works