roll: pigweed, pw_toolchain: pw_bluetooth_sapphire: Revert "use Write instead of UncheckedWrite"

Revert submission 981238

Reason for revert: asan failures

Reverted changes: /q/submissionid:981238

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/983315
GitOrigin-RevId: 87c346ab57a17eb746012398a3fcadec8dfdc0b6
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/217092
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>

https://pigweed.googlesource.com/pigweed/pigweed
pigweed, pw_toolchain Rolled-Commits: 0db899d70ac249e..07994af5927683a
Roller-URL: https://ci.chromium.org/b/8743934356674161425
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ifa73991d53e97686d032cc38d0b2d88534763fe8
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/showcase/rp2/+/218852
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>