Fix for T214058527 ("Your diff, D68868592, broke one test")

Summary:
This diff was created by the [Meta Engineering Agent](https://fb.workplace.com/groups/1205375940786433/permalink/1205378807452813/) to automatically fix the broken tests assigned to you / your team in T214058527:
- The agent searched for and edited the files it deemed relevant for fixing the tests
- After generating the patch, the broken test(s) were rerun to verify they now pass
- Regression tests were also run to verify CI still passes

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**If this diff is the correct fix for T214058527, please accept and land the diff**. *Note that while we set a high quality bar for the agent publishing these diffs, LLM-powered agents still make mistakes, so your critical review is much appreciated and will help us improve!*

**If changes need to be made:** Please commandeer the diff, or comment with the specific changes needed.

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Reviewed By: muirdm

Differential Revision: D68942505

fbshipit-source-id: c944e6dc50d4b06ae6c5a3386e7661dfab8d07a9

eden/scm/sapling/bundle2.py

@@ -467,7 +467,7 @@ def __exit__(self, type, exc, tb):
             # Re-raising from a variable loses the original stack. So only use
             # that form if we need to.
             if seekerror:
-                raise exc
+                raise exc.with_traceback(tb)
 
         self.repo.ui.debug("bundle2-input-bundle: %i parts total\n" % self.count)
 
@@ -1206,7 +1206,7 @@ def getchunks(self, ui: "Any") -> "Iterable[bytes]":
             outdebug(ui, "closing payload chunk")
             # abort current part payload
             yield _pack(_fpayloadsize, 0)
-            exc.with_traceback(tb)
+            raise exc.with_traceback(tb)
         # end of payload
         outdebug(ui, "closing payload chunk")
         yield _pack(_fpayloadsize, 0)