Do not write disableSmartSend to workspace settings

[isidorn]

Testing #22536

1. Follow steps from the test plan item
2. Notice notification with the Disable Smart Send button.
3. Click on the smart send button
4. This setting is written in workspace settings 🐛

We should not use workspace settings for this, as this is a user preference. Writing to workspace settings enforces it on the whole team that uses that repository, and makes a dirty git change.

I suggest to instead use user settings. Or local storage.

[github-actions]

Thanks for the feature request! We are going to give the community 60 days from when this issue was created to provide 7 👍 upvotes on the opening comment to gauge general interest in this idea. If there's enough upvotes then we will consider this feature request in our future planning. If there's unfortunately not enough upvotes then we will close this issue.

[eleanorjboyd]

Thank you for submitting your feature request and everyone who considered it! Unfortunately, this issue did not receive enough votes over the allotted time, and so we are closing the issue. PRs are welcome so you can create a PR that fixes this if you are passionate about getting this feature across the finish line. Thanks!