Always use out/host for host tools

Previously, files were installed to out/host or out/soong/host based
on if kati was used or not. That was changed in aosp/3418304, but
this HostToolDir() that's used by blueprint was not updated to match
that change, so soong-only builds were failing with missing host tools.

Bug: 388038396
Test: m --soong-only dist, ./prebuilts/build-tools/build-prebuilts.sh
Change-Id: Ib104a6399ce2308d81651ec620323caaf9c76151
diff --git a/golang/golang_test.go b/golang/golang_test.go
index 0a4baed..d555d14 100644
--- a/golang/golang_test.go
+++ b/golang/golang_test.go
@@ -47,7 +47,7 @@
 
 	bin := result.ModuleForTests("gobin", result.Config.BuildOSTarget.String())
 
-	expected := "^out/soong/host/" + result.Config.PrebuiltOS() + "/bin/go/gobin/?[^/]*/obj/gobin$"
+	expected := "^out/host/" + result.Config.PrebuiltOS() + "/bin/go/gobin/?[^/]*/obj/gobin$"
 	actual := android.PathsRelativeToTop(bin.OutputFiles(result.TestContext, t, ""))
 	if len(actual) != 1 {
 		t.Fatalf("Expected 1 output file, got %v", actual)