[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* Remmove outdated server tests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/app/platform/license_test.go

@@ -73,24 +73,6 @@ func TestGetSanitizedClientLicense(t *testing.T) {
 	assert.False(t, ok)
 }
 
-func TestGenerateRenewalToken(t *testing.T) {
-	th := Setup(t)
-	defer th.TearDown()
-
-	t.Run("renewal token generated correctly", func(t *testing.T) {
-		setLicense(th, nil)
-		token, appErr := th.Service.GenerateRenewalToken(JWTDefaultTokenExpiration)
-		require.Nil(t, appErr)
-		require.NotEmpty(t, token)
-	})
-
-	t.Run("return error if there is no active license", func(t *testing.T) {
-		th.Service.SetLicense(nil)
-		_, appErr := th.Service.GenerateRenewalToken(JWTDefaultTokenExpiration)
-		require.NotNil(t, appErr)
-	})
-}
-
 func setLicense(th *TestHelper, customer *model.Customer) {
 	l1 := &model.License{}
 	l1.Features = &model.Features{}