[CLD-7567] Deprecate Self Serve: Second Pass (#26853)

* Deprecate Self Serve: First Pass

* Fix ci

* Fix more ci

* Remmove outdated server tests

* Fix a missed spot opening purchase modal in Self Hosted

* Fix i18n

* Clean up some more server code, fix webapp test

* Fix alignment of button

* Fix linter

* Fix i18n server side

* Deprecate in product true up

* Add back translation

* Remove client functions

* Put back client functions

* webapp deprecation

* Deprecate Self Serve: Second Pass

* Fix various pipeline issues

* Fix linter

* Fix pipelines

* Fix handlers_test.go

* Fix console.error around hostedCustomer in reducer

* PICKY LINTER PLEASE

* Fix webapp tests, various other fixes for the CI pipelines

* Fix i18n

* Updates to accomadate enterprise code removal

* Fix mocks

* More removal

* Fix

* Adjustments from PR

* Fixes for QA Feedback

* Update

* Add migrations to remove true up review history

* Fix migrations check

---------

Co-authored-by: Mattermost Build <build@mattermost.com>
Co-authored-by: maria.nunez <maria.nunez@mattermost.com>

server/channels/store/timerlayer/timerlayer.go

@@ -59,7 +59,6 @@ type TimerLayer struct {
 	TermsOfServiceStore             store.TermsOfServiceStore
 	ThreadStore                     store.ThreadStore
 	TokenStore                      store.TokenStore
-	TrueUpReviewStore               store.TrueUpReviewStore
 	UploadSessionStore              store.UploadSessionStore
 	UserStore                       store.UserStore
 	UserAccessTokenStore            store.UserAccessTokenStore
@@ -227,10 +226,6 @@ func (s *TimerLayer) Token() store.TokenStore {
 	return s.TokenStore
 }
 
-func (s *TimerLayer) TrueUpReview() store.TrueUpReviewStore {
-	return s.TrueUpReviewStore
-}
-
 func (s *TimerLayer) UploadSession() store.UploadSessionStore {
 	return s.UploadSessionStore
 }
@@ -451,11 +446,6 @@ type TimerLayerTokenStore struct {
 	Root *TimerLayer
 }
 
-type TimerLayerTrueUpReviewStore struct {
-	store.TrueUpReviewStore
-	Root *TimerLayer
-}
-
 type TimerLayerUploadSessionStore struct {
 	store.UploadSessionStore
 	Root *TimerLayer
@@ -10000,54 +9990,6 @@ func (s *TimerLayerTokenStore) Save(recovery *model.Token) error {
 	return err
 }
 
-func (s *TimerLayerTrueUpReviewStore) CreateTrueUpReviewStatusRecord(reviewStatus *model.TrueUpReviewStatus) (*model.TrueUpReviewStatus, error) {
-	start := time.Now()
-
-	result, err := s.TrueUpReviewStore.CreateTrueUpReviewStatusRecord(reviewStatus)
-
-	elapsed := float64(time.Since(start)) / float64(time.Second)
-	if s.Root.Metrics != nil {
-		success := "false"
-		if err == nil {
-			success = "true"
-		}
-		s.Root.Metrics.ObserveStoreMethodDuration("TrueUpReviewStore.CreateTrueUpReviewStatusRecord", success, elapsed)
-	}
-	return result, err
-}
-
-func (s *TimerLayerTrueUpReviewStore) GetTrueUpReviewStatus(dueDate int64) (*model.TrueUpReviewStatus, error) {
-	start := time.Now()
-
-	result, err := s.TrueUpReviewStore.GetTrueUpReviewStatus(dueDate)
-
-	elapsed := float64(time.Since(start)) / float64(time.Second)
-	if s.Root.Metrics != nil {
-		success := "false"
-		if err == nil {
-			success = "true"
-		}
-		s.Root.Metrics.ObserveStoreMethodDuration("TrueUpReviewStore.GetTrueUpReviewStatus", success, elapsed)
-	}
-	return result, err
-}
-
-func (s *TimerLayerTrueUpReviewStore) Update(reviewStatus *model.TrueUpReviewStatus) (*model.TrueUpReviewStatus, error) {
-	start := time.Now()
-
-	result, err := s.TrueUpReviewStore.Update(reviewStatus)
-
-	elapsed := float64(time.Since(start)) / float64(time.Second)
-	if s.Root.Metrics != nil {
-		success := "false"
-		if err == nil {
-			success = "true"
-		}
-		s.Root.Metrics.ObserveStoreMethodDuration("TrueUpReviewStore.Update", success, elapsed)
-	}
-	return result, err
-}
-
 func (s *TimerLayerUploadSessionStore) Delete(id string) error {
 	start := time.Now()
 
@@ -12140,7 +12082,6 @@ func New(childStore store.Store, metrics einterfaces.MetricsInterface) *TimerLay
 	newStore.TermsOfServiceStore = &TimerLayerTermsOfServiceStore{TermsOfServiceStore: childStore.TermsOfService(), Root: &newStore}
 	newStore.ThreadStore = &TimerLayerThreadStore{ThreadStore: childStore.Thread(), Root: &newStore}
 	newStore.TokenStore = &TimerLayerTokenStore{TokenStore: childStore.Token(), Root: &newStore}
-	newStore.TrueUpReviewStore = &TimerLayerTrueUpReviewStore{TrueUpReviewStore: childStore.TrueUpReview(), Root: &newStore}
 	newStore.UploadSessionStore = &TimerLayerUploadSessionStore{UploadSessionStore: childStore.UploadSession(), Root: &newStore}
 	newStore.UserStore = &TimerLayerUserStore{UserStore: childStore.User(), Root: &newStore}
 	newStore.UserAccessTokenStore = &TimerLayerUserAccessTokenStore{UserAccessTokenStore: childStore.UserAccessToken(), Root: &newStore}