nrf52/ieee802.15.4/6lowpan server crash

Hello,

I have done some testing with more heavy duty sending (100 Hz). The server occasionally crashes in the hpwork queue thread. I have increased stack size of the thread with no noticeable improvements.

I am testing with two nrf52840-dk boards.

Tagging @raiden00pl since you provided the original work.

Thanks!

_Originally posted by @maxikrie in https://github.com/apache/nuttx/issues/11617#issuecomment-2251450978_