internal/postgres: replace LegacyPackage in TestSearchPenalties

For golang/go#39629

Change-Id: I3ba1fffb32cbebaf0066ae3a4d63d340d7ce243b
Reviewed-on: https://go-review.googlesource.com/c/pkgsite/+/262762
Trust: Julie Qiu <julie@golang.org>
Run-TryBot: Julie Qiu <julie@golang.org>
TryBot-Result: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jonathan Amsterdam <jba@google.com>
diff --git a/internal/postgres/search_test.go b/internal/postgres/search_test.go
index 72ecd55..d32f8ba 100644
--- a/internal/postgres/search_test.go
+++ b/internal/postgres/search_test.go
@@ -583,7 +583,7 @@
 
 	for path, m := range modules {
 		v := sample.LegacyModule(path, sample.VersionString, "p")
-		v.LegacyPackages[0].IsRedistributable = m.redist
+		v.Packages()[0].IsRedistributable = m.redist
 		v.IsRedistributable = m.redist
 		v.HasGoMod = m.hasGoMod
 		if err := testDB.InsertModule(ctx, v); err != nil {