test-extension: adapt output to pyoxidizer

The traceback use module name instead of filename.

The rest of the test is still on fire for various other reasons. However that
specific output mismatch is now fixed.

Differential Revision: https://phab.mercurial-scm.org/D11285

tests/test-extension.t

@@ -668,7 +668,8 b" Make sure a broken uisetup doesn't globa"
 Even though the extension fails during uisetup, hg is still basically usable:
   $ hg --config extensions.baduisetup=$TESTTMP/baduisetup.py version
   Traceback (most recent call last):
-    File "*/mercurial/extensions.py", line *, in _runuisetup (glob)
+    File "*/mercurial/extensions.py", line *, in _runuisetup (glob) (no-pyoxidizer !)
+    File "mercurial.extensions", line *, in _runuisetup (glob) (pyoxidizer !)
       uisetup(ui)
     File "$TESTTMP/baduisetup.py", line 2, in uisetup
       1 / 0