### Elasticsearch Version

8.6.0-SNAPSHOT

### Installed Plugins

_No response_

### Java Version

_bundled_

### OS Version

N/A

### Problem Description

We see 8.6.0 master nodes (512MB heap) repeatedly dying with OOME when attempting to do a snapshot with GCS snapshot repository. This is not reproducible with prior versions and we suspect that this is caused by https://github.com/elastic/elasticsearch/pull/90282.

### Steps to Reproduce

1. Start a cluster in a containerized environment; master nodes have 1GB of memory, 512MB of heap
2. Setup a GCS snapshot repository
3. Create a snapshot of the cluster.
4. The master node will OOM with the following message:

```
[5383.050s][warning][gc,alloc] elasticsearch[i6][snapshot][T#26]: Retried waiting for GCLocker too often allocating 256 words
[5383.053s][warning][gc,alloc] elasticsearch[i6][snapshot][T#14]: Retried waiting for GCLocker too often allocating 1029 words
java.lang.OutOfMemoryError: Java heap space
```

### Logs (if relevant)

_No response_
server/src/main/java/org/elasticsearch/threadpool/ThreadPool.java
scheduler.shutdownNow();
        for (ExecutorHolder executor : executors.values()) {
            if (executor.executor() instanceof ThreadPoolExecutor) {
                executor.executor().shutdownNow();
            }
        }
    }
    public boolean awaitTermination(long timeout, TimeUnit unit) throws InterruptedException {
        boolean result = scheduler.awaitTermination(timeout, unit);
        for (ExecutorHolder executor : executors.values()) {
            if (executor.executor() instanceof ThreadPoolExecutor) {
                result &= executor.executor().awaitTermination(timeout, unit);
            }
        }
        cachedTimeThread.join(unit.toMillis(timeout));
        return result;
    }
    public ScheduledExecutorService scheduler() {
        return this.scheduler;
    }
    /**
     * Constrains a value between minimum and maximum values
     * (inclusive).
     *
     * @param value the value to constrain
     * @param min   the minimum acceptable value
     * @param max   the maximum acceptable value
     * @return min if value is less than min, max if value is greater
     * than value, otherwise value
     */