Reduce `batch-open-conversations` to `open-all-conversations` #4085

It seems to me that this feature doesn’t make any sense. It doesn’t help that it’s a pretty long feature too.

In the demo gif we have, it literally shows you can open 2 tabs in 3 clicks… but why not just ctrl-click the links?

I think the feature should only be “open all in tabs” and disregard any selections.