The {{description2}} parser function is still present. The <metadesc>
hooks was just added "so that Description2 can be used as a
replacement for Extension:MetaDescriptionTag", but MW 1.35 deprecated
and 1.36 removed support for Parser::setFunctionTagHook.
Bug: T236809
Change-Id: I53710f0d0a7bc8de4a3404b6df9ccbd1381cf36d
The following sniffs now pass and were enabled:
* MediaWiki.Commenting.LicenseComment.InvalidLicenseTag
Change-Id: I6d9d49895a44890710017d55401618735f43337e