Revert "Issue #2603010 by neclimdul, webflo, mikeryan: EntityRevision destination can explode with missing nodes"

Cross-commit with another patch that changed arguments.

This reverts commit 1f0466c4.

Issue #2603010 by neclimdul, webflo, mikeryan: EntityRevision destination can explode with missing nodes

Issue #2590993 by mikeryan, webflo, svendecabooter, dixon_, phenaproxima: Create stub entities with proper default values

Issue #2560637 by phenaproxima, benjy, quietone, mikeryan, chx, neclimdul: Improve handling of uid 1 during migration

Issue #1392754 by tss, justAChris, jhodgdon: Comply with new documentation standards for @file for namespaced class files

Issue #2178795 by tim.plunkett, jlbellido, YesCT, Berdir, Xano: Allow DiscoveryInterface::getDefinition() to throw an exception for an invalid plugin.

Issue #2213451 by andypost, bdone, benjy, penyaskito, chx, claudiu.cristea, damiankloip, gregboggs, InternetDevels, jessehs, jhedstrom, marvil07, mikeryan, pcambra, Xano, YesCT: Update Migrate API in core