Enumerate every operation in the document — both the paths map and
the OpenAPI 3.1 webhooks map — sharing a single seenIds cache so
cross-list operationId collisions surface the same way as same-list
collisions. Returns the path-operation list followed by webhook
operations (flattened); callers that need the structured webhook
grouping should call listWebhooks directly.
Enumerate every operation in the document — both the
pathsmap and the OpenAPI 3.1webhooksmap — sharing a singleseenIdscache so cross-listoperationIdcollisions surface the same way as same-list collisions. Returns the path-operation list followed by webhook operations (flattened); callers that need the structured webhook grouping should calllistWebhooksdirectly.