Fixed connected Twitter accounts visibility in the classic editor.

[iamdharmesh]

Description of the Change

During release-ready testing, I came across this minor issue of Twitter account visibility in the classic editor. when we disable AutoShare, connected accounts get hidden but on page refresh, it becomes visible again.

This PR fixes this issue and also adds a hidden field for identifying the request from the classic editor.

How to test the Change

1. Create a post with draft status
2. Disable Autoshare by unchecking the "Tweet this post" checkbox
3. Save the post (draft) and verify tweet accounts are not visible.
4. Refresh the page and verify that tweet accounts are not visible.
5. Enable Autoshare by checking the "Tweet this post" checkbox
6. Save the post (draft) and verify tweet accounts are visible.
7. Refresh the page and verify that tweet accounts are visible.

Changelog Entry

Fixed - Connected Twitter accounts visibility in the classic editor.

Credits

Props @iamdharmesh

Checklist:

• I agree to follow this project's Code of Conduct.
• I have updated the documentation accordingly.
• I have added tests to cover my change.
• All new and existing tests pass.