fix: Patch AsciiMath to work with Vite.

Incorporates PR mathjax/MathJax-src#854 by @masx200.

package.json

@@ -44,12 +44,14 @@
     "nanoid": "3.3.3",
     "open-color": "1.9.1",
     "pako": "1.0.11",
+    "patch-package": "8.0.0",
     "perfect-freehand": "1.2.0",
     "pica": "7.1.1",
     "png-chunk-text": "1.0.0",
     "png-chunks-encode": "1.0.0",
     "png-chunks-extract": "1.0.0",
     "points-on-curve": "0.2.0",
+    "postinstall-postinstall": "2.1.0",
     "pwacompat": "2.0.17",
     "react": "18.2.0",
     "react-dom": "18.2.0",
@@ -112,6 +114,7 @@
     "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 --patch-dir src/packages/extensions/patches",
     "prepare": "husky install",
     "prettier": "prettier \"**/*.{css,scss,json,md,html,yml}\" --ignore-path=.eslintignore",
     "start": "vite",