Fix prerelease-lifecycle-gen wrt gengo/v2

staging/src/k8s.io/code-generator/cmd/prerelease-lifecycle-gen/prerelease-lifecycle-generators/status.go

@@ -248,6 +248,7 @@ func Packages(context *generator.Context, arguments *args.GeneratorArgs) generat
 				&generator.DefaultPackage{
 					PackageName: strings.Split(filepath.Base(pkg.Path), ".")[0],
 					PackagePath: path,
+					Source:      pkg.SourcePath, // output pkg is the same as the input
 					HeaderText:  header,
 					GeneratorFunc: func(c *generator.Context) (generators []generator.Generator) {
 						return []generator.Generator{