[roll] Roll fuchsia [wlan] Shutdown dispatchers in EthUnbind()
We missed the dispatcher shutdown logic in another destroy path
started from ethernet device in wlan
device(src/connectivity/wlan/drivers/wlan/device.{h, cc}), so that
the dispatcher got destroyed without being shutdown.
Another issue is that, in wlan device, the only place that Stop()
function is called is in EthUnbind(), which mean we rely on the ethernet
child device to stop the softmac iface. And since EthUnbind() won't be
called before the iface gets destroyed, the interface in iwlwifi will
never be stopped before being destroyed.
This change:
1. Added dispatcher shutdown logic in EthUnbind().
2. Added iface stop logic in the destructor of WlanSoftmacDevice and
removed the Stop() FIDL call in EthUnbind() since it won't take any
effect.
Original-Bug: 112526
Test:
1. fx shell wlan-dev iface del 0, no crash was observed.
2. Turn WiFi off and on and off and on in workstation UI, no crash was
observed and fresh scan results shown from the UI.
3. Shutdown the device and no crash was observed.
4. Create and delete iface for 664 times repeatedly.
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/743083
Original-Revision: ffaa979cdfb994391a072dc7d37b555c319dca24
GitOrigin-RevId: 60f7897b50f4901357c3c7d65049942b24d78b7e
Change-Id: Ibc9f1dd16cd8437a313d195ad229e73d2e0c3c7e
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