chore: use theme for account settings

[johanseto]

Description

This could be useful to use the same setting than
https://github.com/nelc/nelp-edx-theme/blob/624ec0dc96a34fe4ea0e0e9432e0b603c27375d6/nelp-edx-theme-bragi/lms/templates/nelp-head-extra.html#L29

Additional information

Include anything else that will help reviewers and consumers understand the change.

• Does this change depend on other changes elsewhere?
• Any special concerns or limitations? For example: deprecations, migrations, security, or accessibility.
• Link to other information about the change, such as Jira issues, GitHub issues, or Discourse discussions.

Checklist for Merge

• Tested in a remote environment
• Updated documentation
• Rebased master/main
• Squashed commits

ful information to include:

• Include screenshots for changes to the UI (ideally, both "before" and "after" screenshots, if applicable).
• Provide links to the description of corresponding configuration changes. Remember to correctly annotate these
  changes.

Testing instructions

Before

After

Additional information

Include anything else that will help reviewers and consumers understand the change.

• Does this change depend on other changes elsewhere?
• Any special concerns or limitations? For example: deprecations, migrations, security, or accessibility.
• Link to other information about the change, such as Jira issues, GitHub issues, or Discourse discussions.

Checklist for Merge

• Tested in a remote environment
• Updated documentation
• Rebased master/main
• Squashed commits

[andrey-canon]

REQUIRED_USER_ACCOUNT_FIELDS setting is used to control if the main page should ask for some specific fields, if we use the same setting that means that we can not activate the api without activating the theme feature

[johanseto]

Close due #195 (review)