[bun] beacon-node crashed with subscribe-all-subnet flag

[twoeths]

Describe the bug

it happens quite frequently

I notice external_memory is quite high on both main thread and worker thread at the time, looks like it links to the asyncAggregationWithRandomness() blst napi api

Expected behavior

• beacon-node with subscribe-all-subnets flag does not crash
• stable external_memory

Steps to reproduce

No response

Additional context

No response

Operating system

Linux

Lodestar version or commit hash

unstable

[twoeths]

root cause could be due to the performance of asyncAggregateWithRandomness(), see #8524