[roll third_party/pigweed] pw_ide: Fix CLI command docs

When `_inject_reporter` was introduced, it broke the automatically
generated CLI command docs, because they were generated from
docstrings and decorating a function yields a new function with new
(null) docstrings. This hoists those docstrings back up and fixes the
problem.

This also makes it a runtime error to try to generate documentation
from a command with no docstring, to prevent this kind of regression
from happening again.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/184955

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 5a1bf6af624961d..788d6b60eb323a9
Roller-URL: https://ci.chromium.org/b/8759890980634161281
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Id8362afa757de4571cb88413b76c7f6044469064
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/186719
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 5a1bf6a..788d6b6 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 5a1bf6af624961d35c1b0d27adf35186c658f875
+Subproject commit 788d6b60eb323a9a4bc39a77ead21e74d182131f