[trunk-sim] changefeedccl: add syntax support for DB-level ALTER CHANGEFEED#285

rishabh7m wants to merge 1 commit intomaster-trunkcrltest-issue-syncing/cockroach-fork:master-trunkfrom

stable-trunk-sim--trunk-20251121-114434crltest-issue-syncing/cockroach-fork:stable-trunk-sim--trunk-20251121-114434Copy head branch name to clipboard