test(bundle-check): cover the zero-property refusal and pin the reported bundle

cmd/internal-tools/bundle-check/testdata/no-properties.ts

@@ -0,0 +1,7 @@
+import { Tap, actions } from "@sanderling/spec";
+
+export const properties = {};
+export const actionsRoot = actions((state) => {
+  const button = state.ax.find("desc:primary");
+  return button ? [Tap({ on: button })] : [];
+});

cmd/internal-tools/bundle-check/testdata/plain.ts

@@ -0,0 +1 @@
+export const answer = 42;