Issue #540008 by kristiaanvandeneynde, Spokje, daffie, clayfreeman, alexpott, eelkeblok, michaelfavia, ianthomas_uk, zaporylie, johnwebdev, abhisekmazumdar, anmolgoyal74, greggles, quietone, shaal, catch, rivimey, AaronMcHale, Berdir, ndf, xjm, finne, Wim Leers, esolitos, heddn, webchick, Bojhan, andypost, efpapado, benjifisher, lauriii, Gábor Hojtsy, moshe weitzman, harings_rob: Add a container parameter that can remove the special behavior of UID#1

Issue #3255637 by Liam Morland, 3li, joegraduate, rivimey, alexpott, mondrake, ravi.shankar, hswong3i, ameymudras, longwave, Anchal_gupta, neclimdul, Martijn de Wit, sgourebi, pradhumanjainOSL, gambry, kim.pepper: Deprecate NULL values in Html::escape(), ::decodeEntities(), and FormattableMarkup::placeholderFormat() to make it easier to upgrade to PHP 8

Issue #3174108 by _pratik_, asad_ahmed, rivimey, NivethaSubramaniyan, longwave: FieldableEntityNormalizerTrait::extractBundleData() has incorrect return type

Issue #2859304 by quietone, heddn, Jo Fitzgerald, maxocub, rivimey, phenaproxima, jhodgdon: Show field type migrations correctly in Migrate Drupal UI