[monobuild] Guard 'Get build revision number' against non-date build numbers (fix Foundation stage) - #6649

[monobuild] Guard 'Get build revision number' against non-date build numbers (fix Foundation stage)#6649

Kyaw Thant (kythant) wants to merge 2 commits into

release/dev/monobuildmicrosoft/WindowsAppSDK:release/dev/monobuildfrom

user/kythant/foundation-monobuild-buildrevisionmicrosoft/WindowsAppSDK:user/kythant/foundation-monobuild-buildrevisionCopy head branch name to clipboard