[efficiency-improver] perf: add PropertyBag.FirstOrDefault(T)() to eliminate per-call array allocation#9488

Evangelink wants to merge 1 commit into

mainmicrosoft/testfx:mainfrom

efficiency/propertybag-firstordefault-b36a19e9bbe579d0microsoft/testfx:efficiency/propertybag-firstordefault-b36a19e9bbe579d0Copy head branch name to clipboard