MM-56629 Render Markdown in batched email notifications (#26217)

* [MM-56629] rendered markdown in batched email (#26116)

* [MM-56629] added unit test for GenerateHyperlinkForChannels (#26116)

* [MM-56629] refactored code to remove duplicates, updated test (#26116)

* [MM-56629] updated landing url and cleared check-style (#26116)

* [MM-56629] added app-layesrs and mocks (#26116)

* [MM-56629] updated unit tests (#26116)

* [MM-56629] reverted changes of removing unused context parameter (#26116)

* [MM-56629] removed unused method generateHyperlinkForChannels (#26116)

* [MM-56629] fixed check-style error (#26116)

* [MM-56629] refactored (#26116)

---------

Co-authored-by: Sazzad Hossain <sazzad.hossain@marginedge.com>
Co-authored-by: Harrison Healey <harrisonmhealey@gmail.com>

server/channels/app/email/service.go

@@ -162,14 +162,24 @@ type ServiceInterface interface {
 	SendNoCardPaymentFailedEmail(email string, locale string, siteURL string) error
 	SendRemoveExpiredLicenseEmail(ctaText, ctaLink, email, locale, siteURL string) error
 	AddNotificationEmailToBatch(user *model.User, post *model.Post, team *model.Team) *model.AppError
-	GetMessageForNotification(post *model.Post, translateFunc i18n.TranslateFunc) string
+	GetMessageForNotification(post *model.Post, teamName, siteUrl string, translateFunc i18n.TranslateFunc) string
+	GenerateHyperlinkForChannels(postMessage, teamName, teamURL string) (string, error)
 	InitEmailBatching()
 	SendChangeUsernameEmail(newUsername, email, locale, siteURL string) error
 	CreateVerifyEmailToken(userID string, newEmail string) (*model.Token, error)
 	SendIPFiltersChangedEmail(email string, userWhoChangedFilter *model.User, siteURL, portalURL, locale string, isWorkspaceOwner bool) error
+	SetStore(st store.Store)
 	Stop()
 }
 
+func (es *Service) Store() store.Store {
+	return es.store
+}
+
+func (es *Service) SetStore(st store.Store) {
+	es.store = st
+}
+
 func (es *Service) GetPerDayEmailRateLimiter() *throttled.GCRARateLimiter {
 	return es.perDayEmailRateLimiter
 }