Issue #3054317 by iuana, yogeshmpawar, Berdir: Move FieldLayoutEntityFormDisplay::getDefaultRegion() and FieldLayoutEntityViewDisplay::getDefaultRegion() to FieldLayoutEntityDisplayTrait

Issue #3054392 by iuana, joachim: protected methods in LocalAwareRedirectResponseTrait are missing docs

Issue #2999387 by iuana, tashaharrison80, fgm, mradcliffe: Types documented for method returns on ConfirmFormInterface are mostly wrong

Issue #2998483 by longwave, iuana, tstoeckler, Eli-T: Remove config-editing parts from demo_umami_install() in favor of exported configuration