[roll third_party/pigweed] pw_thread: Use pw::Function to start threads

Original-Fixes: b/243018475
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/205760
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 87126e11b80d206..9e90af3746446e4
Roller-URL: https://ci.chromium.org/b/8749557708084640737
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I63c682399ef438396ab7c705686aa5e28aa4ce40
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/quickstart/bazel/+/206932
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 87126e1..9e90af3 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 87126e11b80d206e9745b057f29ca23f6cd028c2
+Subproject commit 9e90af3746446e4aaaa0ccc5dd2079cf60d744a1