Improve formatParam to not mutate the input

[nazarhussain]

Expected behavior

No input parameters should be mutated.

Actual behavior

Currently the formatParam function in web3-eth-abi package is mutating the input parameters. That can have side effects and may result in introducing bugs. Would be nice fix it.

https://github.com/ChainSafe/web3.js/blob/d9726d41babe14bc823d5d2ea4e4af15ef5914ac/packages/web3-eth-abi/src/utils.ts#L120

https://github.com/ChainSafe/web3.js/blob/a1c7d71973ec17f9287fbea8939e64a80e589fc6/packages/web3-eth-abi/src/index.js#L249

Environment

1.x, 4.x

[github-actions]

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[mconnelly8]

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