Simion

https://playwright.dev/docs/api/class-browsertype#browser-type-launch-option-firefox-user-prefs Tested locally and everything works fine. 

Tried `blockAds=true` when using firefox via playwright websocket. It does not load ublock. I've looked at the [install adblock script](https://github.com/browserless/browserless/blob/main/scripts/install-adblock.js) and it seems it only downloads the chrome extension. Ublock...