GN-4483: Remove styling for #ember-basic-dropdown-wormhole

[dkozickis]

Overview

Remove styling for #ember-basic-dropdown-wormhole as it may break the styling for applications embedding the editor.

Connected issues and PRs

https://binnenland.atlassian.net/browse/GN-4483

Setup

1. Checkout GN-4483: Remove styling for #ember-basic-dropdown-wormhole frontend-embeddable-notule-editor#128
2. Checkout this PR
3. In the embeddable repo do a npm link ../ember-rdfa-editor/ (depends on where you have the editor checked out)
4. In the embeddable repo npm run start

How to test/reproduce

• Observe that the dropdown for the Inline variable renders in the correct place when fix from the editor is npm linked
  

• Observe that the dropdown is rendered in the wrong place when the fix from the editor is not npm linked

Challenges/uncertainties

Checks PR readiness

• UI: works on smaller screen sizes
• UI: feedback for any loading/error states
• Check cancel/go-back flows
• Check database state correct when deleting/updating (especially regarding relationships)
• changelog
• npm lint
• no new deprecations

[x-m-el]

see lblod/frontend-embeddable-notule-editor#128 (review) for a detailed review.

The part referring to code here is a question if z-index: 9999 might be doing something good (bugfix) that we don't know about. It might be an idea to leave that code in.

But I personally lean to just removing it, as I can't reproduce any bug that would need it 🤷