[3.15] gh-103878: Document that the cancelled file dialog value is only falsy (GH-152429)#152629

serhiy-storchaka merged 1 commit into

python:3.15python/cpython:3.15from

miss-islington:backport-9dd3340-3.15miss-islington/cpython:backport-9dd3340-3.15Copy head branch name to clipboard