fix(chat): keep single locked history message unchanged

src/stores/chat/__tests__/chat-machine.transitions.test.ts

@@ -453,7 +453,7 @@ describe("chatMachine transitions", () => {
     actor.stop();
   });
 
-  it("auto unlocks a single locked image message after payment", async () => {
+  it("keeps a single locked image message locked after payment", async () => {
     const actor = createActor(
       createTestChatMachine({
         historyMessages: [
@@ -495,16 +495,15 @@ describe("chatMachine transitions", () => {
     );
 
     actor.send({ type: "ChatPaymentSucceeded" });
-    await waitFor(actor, (snapshot) =>
-      snapshot.matches({ userSession: "ready" }),
-    );
 
+    expect(actor.getSnapshot().matches({ userSession: "ready" })).toBe(true);
     expect(actor.getSnapshot().context.unlockHistoryPromptVisible).toBe(false);
     expect(actor.getSnapshot().context.messages).toMatchObject([
       {
         id: "msg-image-locked",
-        imageUrl: "https://example.com/unlocked.jpg",
-        locked: false,
+        imageUrl: "https://example.com/locked.jpg",
+        imagePaywalled: true,
+        locked: true,
       },
     ]);