[MM-23017] Add check for groups to SendNotifications (#14039)

* MM-23017 Check group mentions as part of notification logic

* Add nil groups to existing test cases

* MM-23017 Add tests for insertGroupMention and addGroupMention

* MM-23017 Add tests for getExplicitMentions that have groups

* Add tests for group store GetMemberUsersNotInChannel

* MM-23017 Add tests for AllowGroupMentions

* MM-23017 Fix error message name

* MM-23017 Swap Checks to Name

* MM-23017 Code review fixes

* Rename var and fix allowGroupMentions test

* MM-23017 Use GetMemberUsersInTeam inside of insertGroupMentions

* MM-23017 use group mentions permission

* Actually call GetMemberUsersInTeam

* Remove unnecessary new line

* Uncomment filter allow reference

* MM-23017 Fix group channel notifications

* Update store layer

* MM-23017 Improve test coverage for group channels

* Trigger CI

* Trigger CI

store/timer_layer.go

@@ -3054,6 +3054,38 @@ func (s *TimerLayerGroupStore) GetMemberUsers(groupID string) ([]*model.User, *m
 	return resultVar0, resultVar1
 }
 
+func (s *TimerLayerGroupStore) GetMemberUsersInTeam(groupID string, teamID string) ([]*model.User, *model.AppError) {
+	start := timemodule.Now()
+
+	resultVar0, resultVar1 := s.GroupStore.GetMemberUsersInTeam(groupID, teamID)
+
+	elapsed := float64(timemodule.Since(start)) / float64(timemodule.Second)
+	if s.Root.Metrics != nil {
+		success := "false"
+		if resultVar1 == nil {
+			success = "true"
+		}
+		s.Root.Metrics.ObserveStoreMethodDuration("GroupStore.GetMemberUsersInTeam", success, elapsed)
+	}
+	return resultVar0, resultVar1
+}
+
+func (s *TimerLayerGroupStore) GetMemberUsersNotInChannel(groupID string, channelID string) ([]*model.User, *model.AppError) {
+	start := timemodule.Now()
+
+	resultVar0, resultVar1 := s.GroupStore.GetMemberUsersNotInChannel(groupID, channelID)
+
+	elapsed := float64(timemodule.Since(start)) / float64(timemodule.Second)
+	if s.Root.Metrics != nil {
+		success := "false"
+		if resultVar1 == nil {
+			success = "true"
+		}
+		s.Root.Metrics.ObserveStoreMethodDuration("GroupStore.GetMemberUsersNotInChannel", success, elapsed)
+	}
+	return resultVar0, resultVar1
+}
+
 func (s *TimerLayerGroupStore) GetMemberUsersPage(groupID string, page int, perPage int) ([]*model.User, *model.AppError) {
 	start := timemodule.Now()