Replace deprecated FormField component with FormTextField from the component-library

### Description

Currently, the extension is using an outdated `FormField` component, which needs to be replaced with the new `FormTextField` component.

This is a massive undertaking by itself and creating a single PR would be too large. Smaller PRs can be submitted against this issue to ensure easier review and gradual improvements.

### Technical Details

- Replace instances of FormField component (`ui/components/ui/form-field/form-field.js`) with FormTextField component (`ui/components/component-library/form-text-field/form-text-field.js`)
- Component APIs are slightly different so ensure all props have been migrated appropriately

### Acceptance Criteria

- Instances of FormField component are completely replaced with the new FormTextField component
- The component APIs are updated to reflect the changes in the new FormField component and there is no functional changes or visual regression
- Each Pull Request (PR) should include **no more than 3 files**
- The code changes should pass Jest tests, linting, and Storybook without any errors.
- The PR must include before and after screenshots of the UI to ensure there are no visual regressions.

If the acceptance criteria is not met, PRs may be closed.

### Difficulty: Intermediate

Good first issue for: External contributors who are familiar with running the extension locally, have knowledge of React, component props, Jest tests, linting, and Storybook, and want to contribute to improving the cohesiveness of UI in the extension

Start by reviewing usages of ui/components/ui/form-field/form-field.js and the replacement at ui/components/component-library/form-text-field/form-text-field.js. For one small set of usages, compare the component APIs and update no more than 3 files. Verify Jest tests, linting, Storybook, and before-and-after screenshots with no functional or visual regression.

Written by the indexing model from the issue text.