Revert "[MM-48626] Move plugins environment out of Channels (#21730)" (#21934)

app/plugin_event.go

@@ -9,10 +9,10 @@ import (
 	"github.com/mattermost/mattermost-server/v6/model"
 )
 
-func (s *PluginService) notifyClusterPluginEvent(event model.ClusterEvent, data model.PluginEventData) {
+func (ch *Channels) notifyClusterPluginEvent(event model.ClusterEvent, data model.PluginEventData) {
 	buf, _ := json.Marshal(data)
-	if s.platform.Cluster() != nil {
-		s.platform.Cluster().SendClusterMessage(&model.ClusterMessage{
+	if ch.srv.platform.Cluster() != nil {
+		ch.srv.platform.Cluster().SendClusterMessage(&model.ClusterMessage{
 			Event:            event,
 			SendType:         model.ClusterSendReliable,
 			WaitForAllToSend: true,