Test panic in dance

[rumyantseva]

In FerretDB we have debugError command that allows us to see how everything would work if FerretDB panics.
Let's write a test for it.

As with the current task run configuration FerretDB panics and stops, we need to provide a way to run FerretDB in a non-debug mode (when panics are recovered and not thrown).

TODO:

• Add a debugError test that causes panic on the FerretDB side
• Fix FerretDB to provide the necessary configuration and setup CI to work this way

[chilagrow]

Moved the issue to FerretDB repo FerretDB/FerretDB#3672, because TODO links in FerretDB repo needs to be FerretDB issue for linters to be happy. Closing it as duplicate.

[AlekSi]

FerretDB/FerretDB#3672 (comment)