[roll] Roll fuchsia [brcmfmac][SIM] Rx stall detect logic polishing

This change mixed several sub-changes related to rx stall/freeze detect
and re-association logic:

1. Fixed of the false positive cases by adding tx_last_log update.
2. Changed the scale of deauth number limitation from system time to log
count.(The limitation will be changed from "No more than 2 deauths in 1
hour" to "No more than 2 deauths in 1 connected hour")
3. Change the trigger condition of deauth to rx_freeze_count >=
threshold, to re-enable it when time limit passes.
4. Clean up the rx_freeze_count when each time when deauth is
successfully triggered.
5. Added one unittest for the deauth logic.

P.S. The detect rule is still using driver rx count but not fw rx count,
so that txq full issue can still be detected by this rule. We still
remain the hope that deauth can be a mitigation for this issue as well.

Original-Bug: 72955
Test:
1. Manually tested the detect rule and it was triggered correctly.
2. New SIM test added.

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/507408
Original-Revision: c7ea2a219f2880092eaaec2db9c93efc3d6e4be7
GitOrigin-RevId: a3c34b3a93b557dfd00e61181aa996593fa66bc7
Change-Id: I2f038b8d3fe163527c6dbb2df72f14a964c5b36f
diff --git a/stem b/stem
index 92a52fb..8492ac8 100644
--- a/stem
+++ b/stem
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