[KV Feedback]: Dequeue is not working

### 🔍

- [X] Did you search for existing issues?

### Type of feedback

Bug report

### Description

We're facing an issue where events are not de-queued in our Deno Deploy environment for the past 24 hours

We have not changed anything specific to the queue or dequeue logic

### Steps to reproduce (if applicable)

```

const db = await Deno.openKv();
//...
const result = await db
.atomic()
.check({ key: keys.WEBHOOK_LOCK(txHash, webhookId), versionstamp: null }) //ensure not queued before
.set(keys.WEBHOOK_LOCK(txHash, webhookId), true, {
expireIn: Number(Deno.env.get("WEBHOOK_LOCK_EXPIRE_IN_MILLIS")!),
})
.enqueue({ ...event, timestampMillis: Date.now() })
.commit();
console.log(`Webhook for tx ${txHash} queued`, result);
if (!result.ok) {
console.log(`Webhook for tx ${txHash} already queued`);
}

```

### Expected behavior (if applicable)

For the same DB instance, we have the following

```
db.listenQueue(callback);
```

but the callback never gets triggered, and in the analytics dashboard we don't see any dequeue count

### Possible solution (if applicable)

_No response_

### Additional context

We did previously see `gep-us-east4 Error: txnproxy call timed out`

Start with the Deno.openKv(), atomic().enqueue(), and db.listenQueue(callback) calls in the report, then compare the enqueue result with the missing callback and dequeue count in Deno Deploy analytics. Reproduce the behavior in the reported environment and determine whether the queue is accepted but not delivered; done means the callback runs and dequeue activity is recorded for the same DB instance.

Written by the indexing model from the issue text.