The first v2.2.0 dispatch failed at archive-security after semantic-release had
already committed its release artifacts (chore(release): 2.2.0). Undo those so
the re-dispatch regenerates them once instead of duplicating the CHANGELOG
section: restore .release-notes.md to the root, and drop the 2.2.0 entries from
CHANGELOG.md and the docs changelog. The tag and draft release were deleted, so
the fresh run re-tags on this commit, which includes the #665 fixes the previous
tag lacked. Non-releasable type so the re-run stays 2.2.0.