Add optional param hex to getTransaction and getBlock.

[Muhammad-Altabba]

Description

Fixes #5761 and #5703 by adding an optional parameter hex for both getTransaction and getBlock.
However, another optional bigIntOnOverflow has been added at hexToNumber and toNumber only. Which introduces a functionality similar to 4.x for those 2 functions only.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist for 1.x:

• I have selected the correct base branch.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• Any dependent changes have been merged and published in downstream modules.
• I ran npm run dtslint with success and extended the tests and types if necessary.
• I ran npm run test:cov and my test cases cover all the lines and branches of the added code.
• I ran npm run build with success.
• I have tested the built dist/web3.min.js in a browser.
• I have tested my code on the live network.
• I have checked the Deploy Preview and it looks correct.
• I have updated the CHANGELOG.md file in the root folder.

Checklist for 4.x:

• I have selected the correct 4.x base branch.
• Within the description, the feature or issue is discussed in detail or an issue is linked.
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas.
• I have added any required tests for the changes I made
• I have made corresponding changes to the documentation
• Any dependent changes have been merged and published in downstream modules.
• I ran yarn successfully
• I ran yarn lint successfully
• I ran yarn build:web successfully
• I ran yarn test:unit successfully
• I ran yarn test:integration successfully
• I ran compile:contracts successfully
• I have tested my code.
• I have updated the corresponding CHANGELOG.md file in the packages I have edited.

[coveralls]

Pull Request Test Coverage Report for Build 4252570288

• 20 of 26 (76.92%) changed or added relevant lines in 2 files are covered.
• 469 unchanged lines in 10 files lost coverage.
• Overall coverage decreased (-2.4%) to 72.612%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
packages/web3-core-helpers/src/formatters.js	18	19	94.74%
packages/web3-utils/src/utils.js	2	7	28.57%

Files with Coverage Reduction	New Missed Lines	%
packages/web3-core-requestmanager/src/jsonrpc.js	2	82.76%
packages/web3-core-method/lib/index.js	4	93.82%
packages/web3-utils/lib/utils.js	13	91.12%
packages/web3-core-helpers/lib/formatters.js	18	81.2%
packages/web3-core-helpers/src/formatters.js	24	80.58%
packages/web3-core-helpers/src/errors.js	31	4.41%
packages/web3-utils/src/soliditySha3.js	55	5.13%
packages/web3-utils/src/index.js	58	36.89%
packages/web3-utils/src/utils.js	95	12.87%
packages/web3-eth-accounts/src/index.js	169	23.26%

Totals
Change from base Build 4135806385:	-2.4%
Covered Lines:	3440
Relevant Lines:	4458

---

💛 - Coveralls

[jdevcs]

build files indistshould be removed, as these are only included in release PR.

[luu-alex]

Thanks for this change Muhammad, it looks good. One thing can you update the documentation too, https://web3js.readthedocs.io/en/v1.8.2/web3-utils.html#hextonumber