test: add scenario check custom nonce toggle works correctly. (#23418)

## **Description**

In this PR we add the scenario for the flow 'Check custom nonce toggle'.
This task belongs to the effort of documenting manual QA flows in this
[Epic](#21962).

[![Open in GitHub
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## **Related issues**

Fixes:
[21989](#21989)

## **Manual testing steps**

1. Verify that the test steps align with the sequence in the video.
You can find rendered table
[here](https://github.com/MetaMask/metamask-extension/blob/3db07ce715f306ba329c0c4cf987b97893109e51/test/scenarios/17.%20settings/advanced/check%20custom%20nonce%20toggle.csv).


## **Screenshots/Recordings**



https://github.com/MetaMask/metamask-extension/assets/104780023/6fb61cbe-485b-4cf8-a301-1841b70fcb91



## **Pre-merge author checklist**

- [x] I’ve followed [MetaMask Coding
Standards](https://github.com/MetaMask/metamask-extension/blob/develop/.github/guidelines/CODING_GUIDELINES.md).
- [x] I've clearly explained what problem this PR is solving and how it
is solved.
- [x] I've linked related issues
- [x] I've included manual testing steps
- [x] I've included screenshots/recordings if applicable
- [x] I’ve included tests if applicable
- [x] I’ve documented my code using [JSDoc](https://jsdoc.app/) format
if applicable
- [x] I’ve applied the right labels on the PR (see [labeling
guidelines](https://github.com/MetaMask/metamask-extension/blob/develop/.github/guidelines/LABELING_GUIDELINES.md)).
Not required for external contributors.
- [x] I’ve properly set the pull request status:
  - [ ] In case it's not yet "ready for review", I've set it to "draft".
- [ ] In case it's "ready for review", I've changed it from "draft" to
"non-draft".

## **Pre-merge reviewer checklist**

- [x] I've manually tested the PR (e.g. pull and build branch, run the
app, test code being changed).
- [x] I confirm that this PR addresses all acceptance criteria described
in the ticket it closes and includes the necessary testing evidence such
as recordings and or screenshots.

test/scenarios/17. settings/advanced/check custom nonce toggle.csv

@@ -0,0 +1,21 @@
+Step,Test steps,Test data,Expected result,Notes
+1,Open the extension.,,The Welcome Back screen is shown.,
+2,Proceed to Unlock the wallet.,password (8 characters min).,The Ether balance is shown on the overview. The wallet address is shown on the overview. The selected network is Ethereum Mainnet.        ,
+3,Switch networks to a test network.,e.g. Sepolia,The Sepolia balance is shown on the overview. The wallet address is shown on the overview. The selected network is Sepolia.,
+4,Click on three-dot menu located in the upper right corner.,,,
+5,"Go to ""Settings"".",,,
+6,"Choose ""Advanced"".",,"The ""Customize transaction nonce"" feature is set to be off by default.",
+7,Navigate back to the main wallet screen to continue.,,,Click on the MetaMask logo or return to the MetaMask tab if the extension is in the expanded view mode.
+8,"Create the transaction by clicking ""Send"" button.",,,You can use this address as a recipient's address : 0x0c54FcCd2e384b4BB6f2E405Bf5Cbc15a017AaFb
+9,Choose the recipient's address.,,"MetaMask popup with the recipient's address, amount to be sent, gas fee estimates is displayed.",
+10,"Click ""Next"".",,"Metamask popup with the recipient's address, amount, gas and total fees is displayed.",
+11,"Make sure that ""Custom nonce"" field is not shown on the confirmation screen.",,,
+12,Reject or confirm transaction.,,,
+13,"Go back to ""Settings"".",,,
+14,"Proceed to ""Advanced"".",,"Turn on the ""Customize transaction nonce"" toggle.",
+15,Navigate back to the main wallet screen to continue.,,,Click on the MetaMask logo or return to the MetaMask tab if the extension is in the expanded view mode.
+16,"Create the transaction by clicking ""Send"" button.",,,You can use this address as a recipient's address : 0x0c54FcCd2e384b4BB6f2E405Bf5Cbc15a017AaFb
+17,Choose the recipient's address.,,"MetaMask popup with the recipient's address, amount to be sent, gas fee estimates is displayed.",
+18,"Click ""Next"".",,"Metamask popup with the recipient's address, amount, gas and total fees is displayed.",
+19,"Make sure that ""Custom nonce"" field is present under ""Total"" field.",,Wallet suggested custom nonce number is displayed in light grey. ,
+20,Reject or confirm transaction.,,,