[roll third_party/pigweed] pw_console: Cleanup mouse_handler functions

Create pw_console.widgets.mouse_handlers.on_click to simplify
creating clickable text in toolbars.

Started the manual testing guide.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/53701

third_party/pigweed Rolled-Commits: 8f2367a86d5384f..464409932a54536
Roller-URL: https://ci.chromium.org/b/8841123861567417488
Cq-Cl-Tag: roller-builder:pigweed-experimental-roller
Cq-Cl-Tag: roller-bid:8841123861567417488
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I5ec385169c6e427bece266d8770c1f5e57a83d24
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/53912
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 8f2367a..4644099 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 8f2367a86d5384f4bd70ae22ee48fa09d1868c58
+Subproject commit 464409932a54536646efec8067ef5aa051241604