dotnet tool install doesn't support package@version syntax #52706
Description
dotnet tool install dotnet-aspnet-codegenerator@9 today causes the tool installer to look for a package with the literal package Id dotnet-aspnet-codegenerator@9 instead of looking for the most recent stable 9.x version of the dotnet-aspnet-codegenerator package. This is inconsistent with the direction we've been taking other package+version-related commands.
We should ensure that this command (and dotnet tool update) support the package[@version] syntax, and that if that syntax is used the --version flag becomes a validation error.