If we add configuration options to core, update core + extension test suites, and refresh the ParserMigration extension, it will allow us to ship the LTS MediaWiki 1.47 release with Parsoid as the default wikitext parser.

• Set default ParserOptions::newAnon() to useParsoid($wgUseParsoidParser)
• Set mediawiki-config/wmf-config to $wgUseParsoid* to false
• Change $wgUseParsoidParser to default to true; this will break a lot of test cases.
• Change $wgUseParsoidLinksUpdate to default to true; hopefully this won’t break as many
• Change $wgUseParsoidMessages to default to true; again hopefully won’t break as much.