Emitting PackageId whenever we emit AssemblyName. We need to do this to preserve the behavior from PJ where the package id matched the containing PJ folder name. In MSBuild, PackageId will match AssemblyName, unless it is explicitly specified. (#4990)

test/Microsoft.DotNet.Tools.Tests.Utilities/Commands/PackCommand.cs

@@ -107,6 +107,12 @@ namespace Microsoft.DotNet.Tools.Test.Utilities
             return base.Execute(args);
         }
 
+        public override CommandResult ExecuteWithCapturedOutput(string args = "")
+        {
+            args = $"pack {BuildArgs()} {args}";
+            return base.ExecuteWithCapturedOutput(args);
+        }
+
         private string BuildArgs()
         {
             return $"{_projectPath} {OutputOption} {BuildBasePathOption} {TempOutputOption} {ConfigurationOption} {VersionSuffixOption} {ServiceableOption}";