Fix NFT transfer with big token id

[wdv4758h]

Description

Current implementation does not work with big token id. This will cause NFT transfer failure, since the id will be converted to something not correct.

For example:

> // the hex is 0x159ffe6f22fd5cc42c524df6fd5e28d0de38f34e
> // and this big number is 
> decimal = '123456789012345678901234567890123456789012345678'

> // original implementation
> parseInt(decimal).toString(16)
'159ffe6f22fd5d00000000000000000000000000'

> // new implementation
> toBigNumber.dec(decimal).toString(16)
'159ffe6f22fd5cc42c524df6fd5e28d0de38f34e'

This PR simply change the conversion to use BigNumber, which is already in the codebase.

Screenshots/Recordings

Issue

Hex string conversion failure cause NFT transfer failure.

Checklist

• There is a related GitHub issue
• Tests are included if applicable
• Any added code is fully documented

[github-actions]

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.

[wdv4758h]

I have read the CLA Document and I hereby sign the CLA

[gantunesr]

Thanks for the contribution @wdv4758h, do you mind adding unit tests cases to the toHexadecimal method to verify that this issue is fixed

[wdv4758h]

Test for big number is added.
Here is the screenshot of test failure before the patch:

The test will pass after the patch.

[gantunesr]

Thanks @wdv4758h. The PR LGTM, I'll move forward for our QA team to test it. They'll point out in this PR any issues they find.

[gantunesr]

LGTM

[gantunesr]

@wdv4758h I see a linting error in the code, can you fix it please

/home/runner/work/metamask-mobile/metamask-mobile/app/util/number/index.test.ts
Error:   4[8](https://github.com/MetaMask/metamask-mobile/runs/7463846736?check_suite_focus=true#step:5:9)3:12  

error  Replace `toHexadecimal('12345678[9](https://github.com/MetaMask/metamask-mobile/runs/7463846736?check_suite_focus=true#step:5:10)0[12](https://github.com/MetaMask/metamask-mobile/runs/7463846736?check_suite_focus=true#step:5:13)345678901234567890123456789012345678')` with `⏎······toHexadecimal('123456789012345678901234567890123456789012345678'),⏎····`  prettier/prettier

✖ 2 problems (1 error, 1 warning)

You can use yarn lint:fix

[wdv4758h]

@gantunesr done, the yarn lint:fix is applied.

[Fatxx]

Hey @wdv4758h!

Thank you very much for your contribution.

I was testing the issue #4092 and I can confirm that these changes solve the problem reported.

Please check the following:

Current bug:

VIDEO-2022-07-27-19-27-54.mp4

Fix running the same flow on this PR:

• https://recordit.co/0dBeC4XSs6
• Transaction: https://etherscan.io/tx/0x9e3e650cb8310a1f7278d16d81328207e31b55cc867f297f64237337cf874e35

[cortisiko]

I have tested on polygon, BSC and main net: swaps, sending ERC-721's, Sending ENS ERC-721's, sending ERC-20's and native currencies

this is 🌮 🌮 🌮 🌮