[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* Remmove outdated server tests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/platform/services/telemetry/telemetry.go

@@ -490,7 +490,6 @@ func (ts *TelemetryService) trackConfig() {
 		"persistent_notification_interval_minutes":                *cfg.ServiceSettings.PersistentNotificationIntervalMinutes,
 		"persistent_notification_max_count":                       *cfg.ServiceSettings.PersistentNotificationMaxCount,
 		"persistent_notification_max_recipients":                  *cfg.ServiceSettings.PersistentNotificationMaxRecipients,
-		"self_hosted_purchase":                                    *cfg.ServiceSettings.SelfHostedPurchase,
 		"allow_synced_drafts":                                     *cfg.ServiceSettings.AllowSyncedDrafts,
 		"refresh_post_stats_run_time":                             *cfg.ServiceSettings.RefreshPostStatsRunTime,
 		"maximum_payload_size":                                    *cfg.ServiceSettings.MaximumPayloadSizeBytes,