Mention collections which do not support query in websocket subscription documentation

[ebsi-cvalusek]

Describe the Request

I think it would be best to mention the query parameter will be ignored when subscribing to directus_collections and directus_fields.

Specifically, here: https://docs.directus.io/guides/real-time/subscriptions/websockets.html#specifying-fields-to-return

Maintenance Strategy

Only when additional collections do not support query.

[br41nslug]

This is documented here but it's not obvious that this "no query parameters supported" applies to everything dealing with these collections (the API, SDK, GraphQL, Extension Services and WebSocket Subscriptions)

https://docs.directus.io/reference/system/fields.html#query-parameters-1
https://docs.directus.io/reference/system/collections.html#query-parameters

[ebsi-cvalusek]

Might be even better just to doc it on the query parameters:

https://docs.directus.io/reference/query.html

[linear]

EDU-374 Mention collections which do not support query in websocket subscription documentation