Pushing a folder\ with symbols pushes to the PackagePublish instead of SymbolPackagePublish

[donnie-msft]

Running this command, a snupkg is being pushed to the package endpoint, rather than the symbols endpoint.
dotnet nuget push "repro\" --source "nugettest" --skip-duplicate

Pushing ConsoleApp12.1.0.13.snupkg to 'https://dev.nugettest.org/api/v2/package'...

Pushing to a specific set of files repro\*.nupkg or repro\*.snupkg does find the appropriate symbols endpoint as it applies. (except for this bug

Pushing ConsoleApp12.1.0.13.snupkg to 'https://dev.nugettest.org/api/v2/symbolpackage'...

@JonDouglas - should we officially support folder pushes? Our docs actually refer to "a path to a file" which doesn't make sense given we support wildcard/globbing.

Created after a discussion with @joelverhagen & @loic-sharma
/cc @zkat & @dominoFire