Clarify error message when trying to update dotnet tools when there are pre-release versions present

[veikkoeeva]

Is your feature request related to a problem? Please describe.

Install any pre-release version of dotnet tool. Then subsequently update tools f.ex. with dotnet tool update --all --local.

The following error message is given

is not found in NuGet feeds https://api.nuget.org/v3/index.json.

The issue here is that that does exist in that feed. One might be led to think there's a temporary glitch, the package has been removed from the feed or something else and may examine in vain.

Instead one should issue the command like dotnet tool update --all --local --prerelease to install also pre-release packages.

Describe the solution you'd like

To have a clearer error message. For instance something like

Tool was found but only exists in prerelease versions. Run the command with --prerelease to install prerelease versions of tools. Then either update none of the tools or proceed to update the ones that are not pre-release version.

Additional context

This was originally brought up in NuGet channel in DotNetEvolution Discord.