[roll third_party/pigweed] pw_chrono_freertos: Ensure timer periods are always > 0 ticks

Updates the FreeRTOS backend for the SystemTimer to always pass
a non-zero timer period to the native FreeRTOS API. Note that this
does not impact the resulting expiry deadline.

Also updates the facade unit tests to cover this corner case.

Tested: Validated on all known timer backends.
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/57020

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 9e95e4b726be7c5..ee0b1e0779253d6
Roller-URL: https://ci.chromium.org/b/8838985880557371936
Cq-Cl-Tag: roller-builder:pigweed-experimental-roller
Cq-Cl-Tag: roller-bid:8838985880557371936
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I1c0f2b84a23f3f538f05dfc2dabadf1ae41b8091
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/57063
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 9e95e4b..ee0b1e0 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 9e95e4b726be7c5098449d2d4d7dc60e41b5a82b
+Subproject commit ee0b1e0779253d6b0e9c8515822f9b660b94e66a