Currently I am unable to replicate the problem. Initially WiFi was not available after Windows 11 put the computer into a sleep mode (power saving). While everything else seemed to restore from sleep mode the WiFi system was no where to be found. I could not access the WiFi unless I rebooted the computer.
So I turned off my Sleep Mode settings. Now the computer restores as soon as I log back.
Another thing I did... I purchased a powered USB Hub
https://www.amazon.com/dp/B0C6LZ8MYW?ref=ppx_yo2ov_dt_b_product_details&th=1
This allowed me to physically reboot the WiFi Adapter (USB) thus restoring the WiFi link. This worked well. The computer went into the default sleep mode (Power Plan). I logged back into the computer and only the WiFi failed to restart. At this point I simple powered off the WiFi adapter for 2 seconds. Restored the WiFi adapter power and everything worked until the computer went into sleep mode.
At this point I I changed my power plan settings. I turned the settings to off. Now the computer enters Sleep Mode in 10 minutes. I press any key and the computer returns to service. With the WiFi is working.
NOTE: I wanted to repeat the failure again before replying. With the Power Plan default settings restored my WiFi is restoring after "sleep mode." Currently this failure is not repeatable on this Windows 11 Operating System Dell Precision 3660 tower.
Note that all of the Windows 11 OS updates are current. Only the OS updates were made to this system during the last month.
Fortunately the Dell Precision 3660 came with a WiFi adapter. This allowed me to insert a USB hub to correct the real problem. This is a OS issue. But my work around solution is to cycle the WiFi power after restoring the OS from sleep works.