[Do not review] Use MathJax 4.0.0-beta.3

package.json

@@ -31,6 +31,7 @@
     "browser-fs-access": "0.29.1",
     "canvas-roundrect-polyfill": "0.0.1",
     "clsx": "1.1.1",
+    "copyfiles": "2.4.1",
     "cross-env": "7.0.3",
     "eslint-plugin-react": "7.32.2",
     "fake-indexeddb": "3.1.7",
@@ -40,7 +41,7 @@
     "image-blob-reduce": "3.0.1",
     "jotai": "1.13.1",
     "lodash.throttle": "4.1.1",
-    "mathjax-full": "3.2.2",
+    "mathjax-full": "https://github.com/MathJax/MathJax-src#develop",
     "nanoid": "3.3.3",
     "open-color": "1.9.1",
     "pako": "1.0.11",
@@ -55,6 +56,7 @@
     "pwacompat": "2.0.17",
     "react": "18.2.0",
     "react-dom": "18.2.0",
+    "replace-in-file": "7.0.1",
     "roughjs": "4.5.2",
     "sass": "1.51.0",
     "socket.io-client": "2.3.1",
@@ -114,7 +116,7 @@
     "fix": "yarn fix:other && yarn fix:code",
     "locales-coverage": "node scripts/build-locales-coverage.js",
     "locales-coverage:description": "node scripts/locales-coverage-description.js",
-    "postinstall": "patch-package",
+    "postinstall": "patch-package && yarn --cwd node_modules/mathjax-full compile-mjs && node scripts/beta-mathjax-import-paths.js",
     "prepare": "husky install",
     "prettier": "prettier \"**/*.{css,scss,json,md,html,yml}\" --ignore-path=.eslintignore",
     "start": "vite",