The synchronous card-action handlers and the update-prompt resolver
authorized clicks with _allow_group_message(), which answers "may this
sender chat in this group?" — with group_policy=open it returns True
for everyone. The approval resolver already used the correct operator
gate (_is_interactive_operator_authorized), so the three code paths
disagreed: with an open group policy an out-of-allowlist click on an
update-prompt card was fully executed, and approval clicks returned a
resolved-looking card before being rejected asynchronously.
Authorize all three paths with _is_interactive_operator_authorized(),
which checks membership of admins ∪ allowed_group_users (wildcard and
the empty pairing-mode allowlist keep their existing allow semantics,
matching _admit's DM pairing default). A missing operator identity now
fails closed on the update-prompt resolver instead of skipping the
check.
Fixes#96045
a89706e4cb