Remove Tavern from API v3 list of guilds when 'guild' or 'publicGuilds' type parameter get added. (Fixes #12407) (#12438)

* Excluding tavern from showing up in GET /groups API when 'guilds' or 'publicGuilds' type parameter is included.

* Fixed test errors.

* Resolved pull request #12438 issues.

Moved Tavern exclusion to Group model, removed Group controller back to the original and resolved test failures.

website/server/models/group.js

@@ -301,7 +301,7 @@ schema.statics.getGroups = async function getGroups (options = {}) {
       case 'guilds': {
         const query = {
           type: 'guild',
-          _id: { $in: user.guilds },
+          _id: { $in: user.guilds, $ne: TAVERN_ID },
         };
         _.assign(query, filters);
         const userGuildsQuery = this.find(query).select(groupFields);
@@ -330,6 +330,7 @@ schema.statics.getGroups = async function getGroups (options = {}) {
         const query = {
           type: 'guild',
           privacy: 'public',
+          _id: { $ne: TAVERN_ID },
         };
         _.assign(query, filters);