Support autoconverted modules in mixed builds

modules converted with bp2build_available are will also be available to
be used in mixed builds.

Test: build/bazel/scripts/milestone-2/demo.sh full
Test: go tests
Change-Id: I49f16ec3ba5bb11dfed8066af069c27eb04371fb
diff --git a/genrule/genrule.go b/genrule/genrule.go
index 5349906..4d90433 100644
--- a/genrule/genrule.go
+++ b/genrule/genrule.go
@@ -538,7 +538,7 @@
 
 	g.outputFiles = outputFiles.Paths()
 
-	bazelModuleLabel := g.GetBazelLabel()
+	bazelModuleLabel := g.GetBazelLabel(ctx, g)
 	bazelActionsUsed := false
 	if ctx.Config().BazelContext.BazelEnabled() && len(bazelModuleLabel) > 0 {
 		bazelActionsUsed = g.generateBazelBuildActions(ctx, bazelModuleLabel)