Aligns the feature detector field name with the downstream
ApiActorsSupported flag introduced in the previous commit, so the
signal has one consistent name from detection through to consumption.
Also consolidates leftover TODO tags (actorIsAssignableCleanup,
requestReviewsByLoginCleanup) under the single // TODO ApiActorsSupported
tag so there's exactly one thing to grep for.
Pure rename with no logic changes.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
ae5e857c2e