Use local verison of webidl2.js

[dontcallmedom]

Fixes #651

---

💥 Error: 500 Internal Server Error 💥

PR Preview failed to build. (Last tried on Jul 25, 2022, 11:50 AM UTC).

More

PR Preview relies on a number of web services to run. There seems to be an issue with the following one:

🚨 Spec Generator - Spec Generator is the web service used to build specs that rely on ReSpec.

🔗 Related URL

😭  Sorry, there was an error generating the HTML. Please report this issue!
Specification: http://labs.w3.org/spec-generator/uploads/yuObyH/webrtc-stats.html?isPreview=true%3FisPreview%3Dtrue&publishDate=2022-07-25
ReSpec version: 32.2.0
File a bug: https://github.com/w3c/respec/
Error: Error: Evaluation failed: Timeout: document.respec.ready didn't resolve in 99ms.
    at ExecutionContext._ExecutionContext_evaluate (/u/spec-generator/node_modules/puppeteer/lib/cjs/puppeteer/common/ExecutionContext.js:286:15)
    at runMicrotasks (<anonymous>)
    at processTicksAndRejections (node:internal/process/task_queues:96:5)
    at async ExecutionContext.evaluate (/u/spec-generator/node_modules/puppeteer/lib/cjs/puppeteer/common/ExecutionContext.js:117:16)
    at async generateHTML (/u/spec-generator/node_modules/respec/tools/respecDocWriter.js:221:12)
    at async toHTML (/u/spec-generator/node_modules/respec/tools/respecDocWriter.js:92:18)
    at async Object.generate [as respec] (file:///u/spec-generator/generators/respec.js:15:44)
    at async file:///u/spec-generator/server.js:252:48

If you don't have enough information above to solve the error by yourself (or to understand to which web service the error is related to, if any), please file an issue.