Microsoft.Azure.Management.Websites_4.0.0

Regen with new model flatten logic (#28327)

* regen with new model flatten

* regen after merge

* regen after null set removal

* update api

* unod test comments for eh

* undo test comments for sb

* undo custom code for name change

* regen after updates

* update api revert temp files

* regen with all the latest syncs

* regen with default null fix

* regen latest

* update version

* regen cdn and fix tests

* regen monitor

* regen servicelinker

* cdn improvement

Co-authored-by: Yao Kou <yaokou@microsoft.com>