fix: handle key parameter in SpecifierSet.filter for empty specifiers and prerelease is false#1096

notatallshaw merged 1 commit intopypa:mainpypa/packaging:mainfrom

notatallshaw:fix-missing-key-application-in-SpecifierSet.filternotatallshaw/packaging:fix-missing-key-application-in-SpecifierSet.filterCopy head branch name to clipboard