A new instance of `tcpip_thread` get spawned for each call to `cyw43_arch_init()`

[attilawagner]

1. Connect to WiFi
2. Disconnect by calling cyw43_arch_deinit()
3. Repeat
   For each repetition, a new FreeRTOS task gets created, eventually leading to a crash or hang when they try to modify the same data structures.

[kilograham]

can you please retest with latest develop.

yes, a new task should be created each time, but yes also it should be destroyed when you call cyw43_arch_deinit() which definitely wasnt' happening before