Compare the performance of BroadcastChannels to MessageChannels

[tobiu]

So far we are using MessageChannels to connect the different realms. This is a bit cumbersome with forwarding ports, but works well.

We should do some benchmarking to compare it to:
https://developer.mozilla.org/en-US/docs/Web/API/Broadcast_Channel_API

Using them (with specific channel names) would remove the need to manually pass ports.

[github-actions]

This issue is stale because it has been open for 90 days with no activity.

[github-actions]

This issue was closed because it has been inactive for 14 days since being marked as stale.