Format ExceptionGroup traceback

[fantix]

2 errors in the ExceptionGroup:

edgedb error: InternalServerError: cannot fetch database version: ExceptionGroup: unhandled errors in a TaskGroup (2 sub-exceptions)
  Hint: This is most likely a bug in EdgeDB. Please consider opening an issue ticket at https://github.com/edgedb/edgedb/issues/new?template=bug_report.md
  Server traceback:
        | ExceptionGroup: unhandled errors in a TaskGroup (2 sub-exceptions)
        +-+---------------- 1 ----------------
          | Traceback (most recent call last):
          |   File "edb/server/protocol/binary.pyx", line 861, in err
          |     1/0
          | ZeroDivisionError: float division
          +---------------- 2 ----------------
          | Traceback (most recent call last):
          |   File "edb/server/protocol/binary.pyx", line 861, in err
          |     1/0
          | ZeroDivisionError: float division
          +------------------------------------

      The above exception was the direct cause of the following exception:

      Traceback (most recent call last):
        File "edb/server/protocol/binary.pyx", line 999, in edb.server.protocol.binary.EdgeConnection.main_step
          await self.execute()
        File "edb/server/protocol/binary.pyx", line 863, in execute
          async with asyncio.TaskGroup() as g:
        File "asyncio/taskgroups.py", line 145, in __aexit__
          raise me from None
      edb.errors.InternalServerError: ExceptionGroup: unhandled errors in a TaskGroup (2 sub-exceptions)

1 error in the ExceptionGroup:

edgedb error: InternalServerError: cannot fetch database version: ZeroDivisionError: float division
  Hint: This is most likely a bug in EdgeDB. Please consider opening an issue ticket at https://github.com/edgedb/edgedb/issues/new?template=bug_report.md
  Server traceback:
      Traceback (most recent call last):
        File "edb/server/protocol/binary.pyx", line 861, in err
          1/0
      edb.errors.InternalServerError: ZeroDivisionError: float division