Issue #2885583 by drpal, keeganstreet, Dinesh18, naiduharish, sim_1, idebr, larowlan, Gábor Hojtsy, nick_schuch, droplet: Close button in tour module lacks descriptive text

Issue #2897652 by dmsmidt, andrewmacpherson, naiduharish: Move Inline Form Errors module out of Core (Experimental) package and into the Core package

Issue #2357199 by andypost, naiduharish: Consider CommentManagerInterface::addDefaultField() as deprecated and remove in favour of CommentTestTrait