[roll third_party/pigweed] pw_console: Refactor log pane classes

- Refactor log_container.py into log_view and log_store
- Move LogPane toolbar classes into log_pane_toolbars.py
- Add new tests for LogView and LogStore.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/52440

third_party/pigweed Rolled-Commits: c6874801a3f1e1e..a507b3622cd16ed
Roller-URL: https://ci.chromium.org/b/8841678509621683040
Cq-Cl-Tag: roller-builder:pigweed-experimental-roller
Cq-Cl-Tag: roller-bid:8841678509621683040
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I82e977013d9c0ed0329028a82f5beac54ae089d8
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/53181
Reviewed-by: 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 c687480..a507b36 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit c6874801a3f1e1e59b6081382609625917643862
+Subproject commit a507b3622cd16ede64aadb3fc9e14fee1376d8b2