Type of callback for web3.eth.accounts.signTransaction is incorrect

[michaelsbradleyjr]

Expected behavior

tsc should consider that the type of the callback that may be supplied to web3.eth.accounts.signTransaction corresponds to the implementation's calls of that callback in https://github.com/ethereum/web3.js/blob/1.x/packages/web3-eth-accounts/src/index.js#L127.

Actual behavior

The typing in https://github.com/ethereum/web3.js/blob/1.x/packages/web3-eth-accounts/types/index.d.ts#L22 results in tsc wanting the callback to have the type () => void.

Versions

Web3.js 1.2.4.