vscode.dev is not working in Safari 13.1

[ValeraS]

Does this issue occur when all extensions are disabled?: Yes/No

• VS Code Version: vscode.dev
• OS Version: MacOS Safari 13.1

Steps to Reproduce:

1. Go to vscode.dev in Safari 13.1
2. site does not loading, in dev console error "window.matchMedia(it).addEventListener is not a function. (In 'window.matchMedia(it).addEventListener("change",et)'…"
   https://ticino.blob.core.windows.net/sourcemaps/5554b12acf27056905806867f251c859323ff7e9/core/vs/workbench/workbench.web.api.js.map

This error was fixed, but introduced again in this commit 4810839
@alexdima

[osortega]

I'm also seeing some CSP issues.

[alexdima]

As far as I can tell, Safari 13 is no longer supported by Apple (i.e. does not receive security updates anymore). We only support the latest versions for each browser.

@osortega I also see a lot of CSP errors on Safari 15 when looking at release notes. I have created #143030 to track that.