Memoized Tailwind config evaluation (#6500)

## Problem
The Tailwind config is only accessible inside `useTailwindCompilation`,
which means that the upcoming element style plugins won't be able to
access it

## Fix
Store the last seen text contents of the Tailwind config file along with
the last evaluation result. If the new contents of the Tailwind config
file are the same as the last seen contents, the last evaluation result,
otherwise, re-evaluate the Tailwind config file, and store it, and
return it

editor/package.json

@@ -424,6 +424,7 @@
     "source-map-loader": "0.2.3",
     "string-replace-loader": "2.2.0",
     "style-loader": "0.18.2",
+    "tailwindcss": "^3.4.13",
     "tar": "6.0.5",
     "terser-webpack-plugin": "5.3.9",
     "three": "0.140.2",