Remove usage of spaceless tag in Twig templates

Should this have been closed as outdated?

There's still a spaceless tag in https://git.drupalcode.org/project/flag/-/blob/8.x-4.x/templates/flag.ht..., and a scan with Upgrade Status → reports incompatibility with Drupal 11 in themes that have templates based on it.

See also 💬 Spaceless Tag Issue Fixed

That's a new deprecation, its actually the new syntax proposed here.

I think a new issue makes more sense

I have applied all the changes.

@niharika.s your patch is empty