[roll third_party/pigweed] pw_rpc: Don't respond to error messages

Servers and client should never send errors in response to other errors.
Doing so could result in an infinite cycle of error packets.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/60447

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: baf2fdc34ff37cf..3be460dda292cf4
Roller-URL: https://ci.chromium.org/b/8836444911576580305
Cq-Cl-Tag: roller-builder:pigweed-experimental-roller
Cq-Cl-Tag: roller-bid:8836444911576580305
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I41c1b7e93b907718fbb490fe1426e00934081b64
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/60487
Bot-Commit: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
Commit-Queue: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index baf2fdc..3be460d 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit baf2fdc34ff37cf6e33dd4016c125549cbd66e2c
+Subproject commit 3be460dda292cf4dff1a3ad3fa4bf712f111afd4