1.0.0-RC.3 on Maven Central is an accidental republish of RC.2, so the
rename shipped in 1.0.0-RC.4. Point UPGRADE.md, the @Deprecated(since)
annotations, their javadoc, the RC.4 changelog wording, the README
upgrade row and the naming test comment at RC.4, and note that upgrading
from RC.3 is the same as upgrading from RC.2.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>