bugfix for call to structured_traceback (#14453)

Calls to `structured_traceback` take the exploded 3-tuple of
`*sys.exc_info()` as separate arguments, so we don't want to pass the
3-tuple as one argument. This should fix some of the symptoms people are
seeing in https://github.com/ipython/ipython/issues/12831

Test plan: local editable install, seems to work OK. Haven't tried to
repro the problem from the linked issue but this change probably can't
hurt.

From https://github.com/ipython/ipython/pull/14454, which is just an
empty commit, I see the same test failures as in this PR's "Run
Downstream tests" job:
https://github.com/ipython/ipython/actions/runs/9375565881/job/25813901627?pr=14454

So I'm guessing it's not related to the change in this PR.

IPython/core/interactiveshell.py

@@ -2033,7 +2033,7 b' class InteractiveShell(SingletonConfigurable):'
                     print(self.InteractiveTB.stb2text(stb))
                     print("The original exception:")
                     stb = self.InteractiveTB.structured_traceback(
-                                            (etype,value,tb), tb_offset=tb_offset
+                        etype, value, tb, tb_offset=tb_offset
                     )
                 return stb