fix estimateGas to accept hex data without 0x prefix

[nikoulai]

Description

closes #6088

[github-actions]

Bundle Stats

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Total

Asset	Old size	New size	Diff	Diff %
Total	645 KB	645 KB	61 bytes	0.01%

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No assets were added

Removed

No assets were removed

Bigger

No assets were bigger

Smaller

No assets were smaller

Unchanged

Asset	Old size	New size	Diff	Diff %
web3.min.js	628 KB	628 KB	61 bytes	0.01%
../lib/commonjs/index.d.ts	8.43 KB	8.43 KB	0	0.00%
../lib/commonjs/accounts.d.ts	3.67 KB	3.67 KB	0	0.00%
../lib/commonjs/types.d.ts	2.37 KB	2.37 KB	0	0.00%
../lib/commonjs/abi.d.ts	1000 bytes	1000 bytes	0	0.00%
../lib/commonjs/web3.d.ts	808 bytes	808 bytes	0	0.00%
../lib/commonjs/eth.exports.d.ts	280 bytes	280 bytes	0	0.00%
../lib/commonjs/providers.exports.d.ts	148 bytes	148 bytes	0	0.00%
../lib/commonjs/version.d.ts	60 bytes	60 bytes	0	0.00%

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[codecov]

Codecov Report

Merging #6103 (24cac5a) into 4.x (8c3a17b) will increase coverage by 0.00%.
The diff coverage is 100.00%.

Additional details and impacted files

@@           Coverage Diff           @@
##              4.x    #6103   +/-   ##
=======================================
  Coverage   87.41%   87.41%           
=======================================
  Files         199      199           
  Lines        7612     7614    +2     
  Branches     2063     2065    +2     
=======================================
+ Hits         6654     6656    +2     
  Misses        958      958           

Flag	Coverage Δ
UnitTests	87.41% <100.00%> (+<0.01%)	⬆️

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Components	Coverage Δ
web3	∅ <ø> (∅)
web3-core	∅ <ø> (∅)
web3-errors	∅ <ø> (∅)
web3-eth	∅ <ø> (∅)
web3-eth-abi	∅ <ø> (∅)
web3-eth-accounts	∅ <ø> (∅)
web3-eth-contract	∅ <ø> (∅)
web3-eth-ens	∅ <ø> (∅)
web3-eth-iban	∅ <ø> (∅)
web3-eth-personal	∅ <ø> (∅)
web3-net	∅ <ø> (∅)
web3-providers-http	∅ <ø> (∅)
web3-providers-ipc	∅ <ø> (∅)
web3-providers-ws	∅ <ø> (∅)
web3-rpc-methods	∅ <ø> (∅)
web3-utils	∅ <ø> (∅)
web3-validator	∅ <ø> (∅)

[avkos]

Could you please add the unit test to increase coverage?

[jdevcs]

also some tests needs to be fixed

web3-eth-contract:   1 failing
web3-eth-contract:   1) contract
web3-eth-contract:        defaults
web3-eth-contract:          should use "defaultAccount" on "instance" level instead of "from":
web3-eth-contract:       AssertionError: expected 142780n to equal 'Any BigInt'