Sign has invalid types and bug when using context wallet

[mpetrunic]

Method: https://github.com/web3/web3.js/blob/4.x/packages/web3-eth/src/web3_eth.ts#L1076

Docs indicate that you can only get string or buffer as a return type. But the actual typescript return type is:

Bug #1: return type should be explicitly written to depend on passed in format(either string or buffer)

Bug #2: From digging through the code, seems like there is actually a bug in the underlying rpc method wrapper where https://github.com/web3/web3.js/blob/4.x/packages/web3-eth/src/rpc_method_wrappers.ts#LL885C40-L885C40 response is not formatted according to input params.

Expected behavior

consistent return type that depends on submitted params

Actual behavior

Steps to reproduce the behavior

1. [First step]
2. [Second step]
3. [and so on...]

Logs

Environment