feature: SSR

[Xuhv]

Since the DOM is used directly, SSR does not work properly.

lexical-floating-menu/src/FloatingMenuPlugin.tsx

Line 14 in 9073b6b

const DEFAULT_DOM_ELEMENT = document.body;

lexical-floating-menu/src/FloatingMenuPlugin.tsx

Lines 96 to 111 in 9073b6b

	return createPortal(
	<div
	ref={ref}
	aria-hidden={!show}
	style={{
	position: "absolute",
	top: coords?.y,
	left: coords?.x,
	visibility: show ? "visible" : "hidden",
	opacity: show ? 1 : 0,
	}}
	>
	<MenuComponent editor={editor} shouldShow={show} />
	</div>,
	element ?? DEFAULT_DOM_ELEMENT
	);

[Xuhv]

I opened a PR #6 , can you check and merge it? I saw that the repository has a github action, so I update the library's version. If the npm token is still valid, The merged code should be automatically released.