[MM-58355] Send invalidate cache message across the cluster so that websocket connections on other instances are invalidated correctly (#27204)

* [MM-58355] Send invalidate cache message across the cluster so that websocket connections on other instances are invalidated correctly

* Add suggestion to clear the session cache on the local node as well

* Force read from master DB when gettting channel members for websocket to avoid any DB sync issues

* PR feedback

* Missed generated files

server/channels/store/searchlayer/layer.go

@@ -90,7 +90,7 @@ func (s *SearchStore) indexUser(rctx request.CTX, user *model.User) {
 					userTeamsIds = append(userTeamsIds, team.Id)
 				}
 
-				userChannelMembers, err := s.Channel().GetAllChannelMembersForUser(user.Id, false, true)
+				userChannelMembers, err := s.Channel().GetAllChannelMembersForUser(rctx, user.Id, false, true)
 				if err != nil {
 					rctx.Logger().Error("Encountered error indexing user", mlog.String("user_id", user.Id), mlog.String("search_engine", engineCopy.GetName()), mlog.Err(err))
 					return