Remove custom action fragment renderer

This PR removes the custom action fragment renderer as the reason it was created for is fixed in symfony core: https://github.com/symfony/symfony/issues/7124

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | N/A
| License       | MIT
| Doc PR        | N/A