[roll third_party/pigweed] pw_transfer: Don't call Finish() on inactive transfers in the C++ client

This adds the same bugfix as pwrev/75980 to the transfer client.

These bugs are indicative of a design issue in the transfer client;
inactive transfers contexts should not be invoked. This will be fixed
in a later change -- a tracking bug is created.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/77200

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 0bf1eb95496db6e..b0c5c998e1b3e18
Roller-URL: https://ci.chromium.org/b/8825671951765522577
Cq-Cl-Tag: roller-builder:pigweed-sample-project-roller
Cq-Cl-Tag: roller-bid:8825671951765522577
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Icc976318779a9dd8094e17c97617063868effc51
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/sample_project/+/77508
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 0bf1eb9..b0c5c99 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 0bf1eb95496db6eac66c6d547060f8a09cee3161
+Subproject commit b0c5c998e1b3e18898eeb5e1a54a56e8d8c2d714