docs: update docusaurus to v3 (#5625)

* update dependencies

* update onboarding mdx

* fixes for mdx issues

* fixes for mdx compatibility

* resolve mdx errors

* fixes in reference

* fix check errors

* revert change in vale action

* fix node version in action

* fix summary in markdown

www/apps/docs/src/components/LargeCard/index.tsx

@@ -3,11 +3,10 @@ import clsx from "clsx"
 import Link from "@docusaurus/Link"
 import { Badge } from "docs-ui"
 import BorderedIcon from "../BorderedIcon"
+import { IconProps } from "@medusajs/icons/dist/types"
 
 type LargeCardProps = {
-  // TODO change to React.FC<IconProps>
-  // once react versions are resolved
-  Icon: any
+  Icon: React.FC<IconProps>
   image: {
     light: string
     dark?: string