Fix limit on message tail (#13501)

[Dreamsorcerer]

(cherry picked from commit c207cad)

[greptile-apps]

Confidence Score: 5/5

The PR appears safe to merge because no blocking failure remains in the eligible follow-up review scope.

No blocking failure remains.

_{Reviews (4): Last reviewed commit: "Apply suggestion from @Dreamsorcerer" | Re-trigger Greptile}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.20%. Comparing base (7844ddd) to head (3892024).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             3.14   #13511      +/-   ##
==========================================
+ Coverage   96.18%   96.20%   +0.02%     
==========================================
  Files         158      158              
  Lines       50736    50914     +178     
  Branches     2739     2751      +12     
==========================================
+ Hits        48801    48984     +183     
+ Misses       1754     1752       -2     
+ Partials      181      178       -3     

Flag	Coverage Δ
CI-GHA	96.21% <100.00%> (+0.01%)	⬆️
OS-Linux	95.99% <98.88%> (+0.01%)	⬆️
OS-Windows	93.71% <100.00%> (+0.03%)	⬆️
OS-macOS	95.19% <100.00%> (+0.02%)	⬆️
Py-3.10	95.39% <100.00%> (+0.02%)	⬆️
Py-3.11	95.64% <100.00%> (+0.01%)	⬆️
Py-3.12	95.72% <100.00%> (+0.02%)	⬆️
Py-3.13	95.70% <98.88%> (+0.01%)	⬆️
Py-3.14	95.80% <98.88%> (+0.02%)	⬆️
Py-3.14t	94.82% <98.88%> (+0.02%)	⬆️
Py-pypy-3.11	94.66% <98.88%> (+0.01%)	⬆️
VM-macos	95.19% <100.00%> (+0.02%)	⬆️
VM-ubuntu	95.99% <98.88%> (+0.01%)	⬆️
VM-windows	93.71% <100.00%> (+0.03%)	⬆️
cython-coverage	79.02% <96.40%> (+0.73%)	⬆️

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[codspeed-hq]

Merging this PR will not alter performance

✅ 72 untouched benchmarks
⏩ 7 skipped benchmarks¹

---

_{Comparing patchback/backports/3.14/c207cadb257e0959b192ffca0548eca8c71eb96a/pr-13501 (3892024) with 3.14 (7844ddd)}

Footnotes

1. 7 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩