[dotnet] Localization files are copied to wrong place

[filipnavara]

When building #11175 locally I noticed that the localization files were incorrectly copied to a directories like bin/Debug/net6.0-macos/osx-x64/monotouchtest.app/Contents/MonoBundlees instead of MonoBundle/es. There's a directory separator missing after the MonoBundle name.

[filipnavara]

This may have been broken by #10621 which removed the last slash from _AppContentsPath.

[spouliot]

There was an earlier fix, in the P4 bump, to add extra / where none were required before. It's likely a similar case.

[filipnavara]

Yes, it's very likely also the case of ResolvedFileToPublish, just the other ones higher in the same file. I am not sure whether it was intentional breaking change since the MSBuild documentation for MakeRelative still shows directory separators being inserted.

[spouliot]

Fixed in 52ca962