Revert opentype.js to published version, restore webkit snapshots

Keep @shuding/opentype.js at 1.4.0-beta.0 (the published version).
The opentype.js Context Substitution Format 3 fix is tracked
separately in opentypejs/opentype.js#824. Restore webkit-text-stroke
snapshots to match the published dependency.

https://claude.ai/code/session_0192MAXgejpjkKBgChuyTFcd

Author: claude

package.json

@@ -124,7 +124,7 @@
     "vitest": "^0.32.0"
   },
   "dependencies": {
-    "@shuding/opentype.js": "file:/home/user/opentype.js",
+    "@shuding/opentype.js": "1.4.0-beta.0",
     "css-background-parser": "^0.1.0",
     "css-box-shadow": "1.0.0-3",
     "css-gradient-parser": "^0.0.17",