[3.14] gh-143200: fix UAFs in Element.__{set,get}item__ when the element is concurrently mutated (GH-143226)#143273
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picnixz merged 1 commit intopython:3.14from Dec 29, 2025
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…ment is concurrently mutated (pythonGH-143226) (cherry picked from commit b6b0e14) Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
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(cherry picked from commit b6b0e14)
Co-authored-by: Bénédikt Tran 10796600+picnixz@users.noreply.github.com
element_[ass_]subscrvia re-entrant calls #143200