[roll] Roll fuchsia [honeydew][wlan] Move ConnectTransaction handler to Honeydew

Consolidate the WLAN ConnectTransactionEventHandler into Honeydew's
wlan_core_using_fc affordance and remove the duplicate definition in
core_testing/handlers.py.

Enhance Honeydew's ConnectTransactionEventHandler to support async
context management and event queueing on txn_queue for all FIDL
connection events. Update WlanCore.connect to consume events from
txn_queue directly, and update WLAN core tests to import and use the
consolidated Honeydew event handler.

Original-Original-Bug: 522492680
Test: fx test --e2e --output "//src/connectivity/wlan/tests/core:connect_to_ap_test"
Original-Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1720330
Original-Original-Revision: 96c5eb73da62e8ff5297705ee0533c1dd3609a17
GitOrigin-RevId: ae53d026f42ec55e50debd8bbe1cad3a71ecab81
Change-Id: Ifa62b26262e1798e18be607889f4608498c93d9f
Reviewed-on: https://fuchsia-review.googlesource.com/c/integration/+/1720691
Cr-Commit-Position: refs/heads/main@{#197602}
diff --git a/stem b/stem
index a573f25..66588a5 100644
--- a/stem
+++ b/stem
@@ -8,6 +8,6 @@
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-            revision="a670174ed7daf3e8870ed81a19503a6cc45114cf"/>
+            revision="96c5eb73da62e8ff5297705ee0533c1dd3609a17"/>
   </imports>
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