From Dench in a dog hat to Elaine Paige in flower-clad rubber gloves, entertainment royalty is standing up to coronavirus with some bizarre comic relief. Now, where's Cher? ' Coronavirus and culture " a list of major cancellations' Coronavirus " latest updates' See all our coronavirus coverage Now that Cats has faded from view, doomed to become an artefact held up by future historians as a decadent totem of how human…