[MM-51680] : Revert New Browse Channels UI modal changes (https://github.com/mattermost/mattermost-webapp/pull/11262) (#22613)

* Revert https://github.com/mattermost/mattermost-webapp/pull/11262

* fix missing translation

* fix indentation issue

* fix imports in Update accessibility_modals_dialogs_spec.js

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Co-authored-by: Mattermost Build <build@mattermost.com>

webapp/channels/src/sass/components/_channel-invite-modal.scss

@@ -71,9 +71,7 @@
 
         .primary-message {
             margin: 0;
-            color: var(--center-channel-color);
             font-size: inherit;
-            line-height: 28px;
         }
     }