Expand render graph playground editing

Amp-Thread-ID: https://ampcode.com/threads/T-01a033d4-0e44-708e-af0e-6166283416ff
Co-authored-by: Heaust Azure <heaust.azure@gmail.com>

vendor/fxnode/test/browser/fxnode.spec.ts

@@ -7,7 +7,11 @@ test("host snapshots are stable immutable projections with isolated subscription
       view = window.view,
       first = view.getHostSnapshot(),
       same = first === view.getHostSnapshot(),
-      frozen = Object.isFrozen(first) && Object.isFrozen(first.selection) && Object.isFrozen(first.selection.mute);
+      frozen =
+        Object.isFrozen(first) &&
+        Object.isFrozen(first.selection) &&
+        Object.isFrozen(first.selection.nodeIds) &&
+        Object.isFrozen(first.selection.mute);
     let good = 0,
       bad = 0;
     const offBad = view.subscribeHost(() => {
@@ -172,6 +176,7 @@ test("explicit node and selection actions preserve worker authority and structur
   expect(result.duplicate).toBe("node.duplicate");
   expect(result.added).toEqual({ status: "committed", version: 2 });
   expect(result.selected).toEqual({
+    nodeIds: ["supplied-id"],
     nodeCount: 1,
     linkCount: 0,
     canRemove: true,
@@ -182,7 +187,13 @@ test("explicit node and selection actions preserve worker authority and structur
   expect(result.mutedSelection.mute).toEqual({ enabled: true, state: "all-muted" });
   expect(result.removed).toEqual({ status: "committed", version: 4 });
   expect(result.remaining).toBe(0);
-  expect(result.empty).toEqual({ nodeCount: 0, linkCount: 0, canRemove: false, mute: { enabled: false } });
+  expect(result.empty).toEqual({
+    nodeIds: [],
+    nodeCount: 0,
+    linkCount: 0,
+    canRemove: false,
+    mute: { enabled: false },
+  });
   expect(result.notifications).toBe(3);
 });
 test("dedicated worker renders, commits FIFO, fans out and destroys", async ({ page }) => {