chore(upstream-docs): update watched-document baseline

[github-actions]

A watched upstream document moved, or a fetch failure changed its
count, so upstream-docs-state.json no longer describes what the
watcher sees. Merging this makes the new observation the baseline the
next run compares against.

Read the upstream-doc issues this run opened before merging: this
accepts the new bytes as normal, and on its own says nothing about
whether the registers a driver decodes by have moved.

The required checks do not start on their own here. A pull request
opened with GITHUB_TOKEN starts no workflow run, so this one arrives
with an empty status rollup. Close and reopen it to run them. The
validate run dispatched against the branch head is a verdict you can
read in the meantime -- GitHub does not count it toward the rollup.

Opened by the watch-upstream-docs workflow.

[cursor]

Approved. Cursor Bugbot was not present after the first check poll, so that signal was skipped; the remaining criteria do not require human review. No reviewers assigned.

  

_{Sent by Cursor Approval Agent: Pull Request Router and Approver}