Remove usage of spaceless tag in Twig templates

Problem/Motivation

spaceless tag has been removed in Twig 3. It is not used in Drupal 9 anymore.

Steps to reproduce

Remove the spaceless tag from all the twig files

  templates/field/link-formatter-link-separate.html.twig
   templates/form/dropbutton-wrapper.html.twig
   templates/form/select.html.twig
   templates/navigation/toolbar.html.twig

Proposed resolution

Use spaceless filter instead in Drupal 8 too to help new sites become compatible with Twig 3 / Drupal 10.
https://twig.symfony.com/doc/3.x/filters/spaceless.html