[upgrade] Don't crash on non-installed ports

[Thomas1664]

Fixes microsoft/vcpkg#21117

output before:

error: The following packages are not installed:
  azure-storage-cpp:x64-windows
internal error: D:\a\_work\1\s\src\vcpkg\commands.upgrade.cpp(183): vcpkg has crashed; no additional details are available.
Please open an issue at https://github.com/microsoft/vcpkg/issues/new?template=other-type-of-bug-report.md&labels=category:vcpkg-bug with detailed steps to reproduce the problem.

output after:

error: The following packages are not installed:
  azure-storage-cpp:x64-windows

[GitMensch]

Not sure, just wondering: Would it be useful to issue a warning, then install?

(the goal would be a command that ensures you have the most current version, no matter if an old is installed or not)

[BillyONeal]

@GitMensch I believe install --recurse has the behavior you want?

[BillyONeal]

Ah, nope :/

[BillyONeal]

I'm not sure I like this resolution because it's undoing what appears to be a very explicit attempt to emit all possible errors rather than stopping at the first error. Making a competing solution shortly...

[BillyONeal]

Ouch it's even more broken

[Thomas1664]

Ouch it's even more broken

I think that's a different issue.

I'm not sure I like this resolution because it's undoing what appears to be a very explicit attempt to emit all possible errors rather than stopping at the first error.

I restored emitting all errors.

[BillyONeal]

Thanks!