Bug 1812175 - Turn on Sync page - Touch target suggestion is displayed

[gitstart]

The PR makes the Turn on Sync page touch target area larger

Steps to test

1. Have the Accessibility scanner installed and opened.
2. Go to the main menu and tap on "Sign in to sync" option
3. Scan the page

Issue Screenshots

Fix Screenshots

Pull Request checklist

• [x] Tests: This PR includes thorough tests or an explanation of why it does not
• [x] Screenshots: This PR includes screenshots or GIFs of the changes made or an explanation of why it does not
• [x] Accessibility: The code in this PR follows accessibility best practices or does not include any user facing features. In addition, it includes a screenshot of a successful accessibility scan to ensure no new defects are added to the product.

QA

• [x] QA Needed

GitHub Automation

[firefoxci-taskcluster[bot]]

No Taskcluster jobs started for this pull request

```js The `allowPullRequests` configuration for this repository (in `.taskcluster.yml` on the default branch) does not allow starting tasks for this pull request. ```

[csadilek]

Hey @gitstart, Thank you so much for your contribution. It’s much appreciated. Unfortunately, we are in the process of moving this repository to firefox-android early next week, and won’t be able to review or land any PRs until after the migration. Please feel free to reopen a new PR against the new repo once migration is complete. You will have to clone the new repository and reapply your changes. Thank you again, and sorry for the inconvenience.

For more information, please see https://github.com/mozilla-mobile/fenix/issues/26855.