Refactor useAnchorRef and related components to work with the new Popover anchor prop#43713

ciampo merged 7 commits into

refactor/popover-new-anchor-propWordPress/gutenberg:refactor/popover-new-anchor-propfrom

refactor/use-anchor-ref-anchor-propWordPress/gutenberg:refactor/use-anchor-ref-anchor-propCopy head branch name to clipboard