MM-21118: Use querybuilder instead of fmt.Sprintf in channelStore (#13385)

* MM-21118: Use querybuilder instead of fmt.Sprintf in channelStore

We use the querybuilder API instead of just building the query string
manually using fmt.Sprintf

* Replaced comma with colon

store/sqlstore/channel_store.go

@@ -960,7 +960,7 @@ func (s SqlChannelStore) getAllChannelsQuery(opts store.ChannelSearchOpts, forCo
 	}
 
 	if len(opts.ExcludeChannelNames) > 0 {
-		query = query.Where(fmt.Sprintf("c.Name NOT IN ('%s')", strings.Join(opts.ExcludeChannelNames, "', '")))
+		query = query.Where(sq.NotEq{"c.Name": opts.ExcludeChannelNames})
 	}
 
 	return query
@@ -2265,7 +2265,7 @@ func (s SqlChannelStore) channelSearchQuery(term string, opts store.ChannelSearc
 	}
 
 	if len(opts.ExcludeChannelNames) > 0 {
-		query = query.Where(fmt.Sprintf("c.Name NOT IN ('%s')", strings.Join(opts.ExcludeChannelNames, "', '")))
+		query = query.Where(sq.NotEq{"c.Name": opts.ExcludeChannelNames})
 	}
 
 	if len(opts.NotAssociatedToGroup) > 0 {