docs: added documentation for toast component changes (#7141)

* docs: added documentation for toast component changes

* added redirect from use-toast docs to upgrade guide

* remove unused file

* content linting fixes

* update UI package version

* updated ui preset

* fix upgrade guides main page

www/apps/ui/package.json

@@ -15,8 +15,8 @@
   "dependencies": {
     "@faker-js/faker": "^8.0.2",
     "@medusajs/icons": "^1.2.0",
-    "@medusajs/ui": "^2.4.1",
-    "@medusajs/ui-preset": "latest",
+    "@medusajs/ui": "^3.0.0",
+    "@medusajs/ui-preset": "^1.1.3",
     "@radix-ui/react-dialog": "^1.0.4",
     "@radix-ui/react-scroll-area": "^1.0.4",
     "@radix-ui/react-tabs": "^1.0.4",