connect-src test suite allows multiple non-interopable implementations.

[lukewarlow]

I've found that the test suite for connect-src has multiple competing pass states which should be addressed, I've raised web-platform-tests/wpt#50387 on WPT but wanted to bring it to this groups attention too.

This leads to a current situation where WebKit throws for EventSource and WebSocket when it shouldn't be (per Firefox and Chromium and I think the spec see #120 ).

Idk if there are other examples of real interop issues as a result but there could be.