fix(noti): set STOPPED state for ActiveRecordingStopped notifications

[tthvo]

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Fixes #1428

Description of the change:

Correct the descriptor state before sending notifications.

Motivation for the change:

See #1428

How to manually test:

1. Run CRYOSTAT_IMAGE=quay.io... sh smoketest.sh...
2. Create any recording then stop it. Observe the payload containing a recs that has STOPPED state.

[github-actions]

Test image available:

$ CRYOSTAT_IMAGE=ghcr.io/cryostatio/cryostat:pr-1430-fc0f68542723772b193431e3fcc18bc975657bfa sh smoketest.sh

[maxcao13]

INFO: Outgoing WS message: {"meta":{"category":"ActiveRecordingStopped","type":{"type":"application","subType":"json"},"serverTime":1679954870},"message":{"recording":{"downloadUrl":"http://localhost:8181/api/v1/targets/service:jmx:rmi:%2F%2F%2Fjndi%2Frmi:%2F%2Flocalhost:9095%2Fjmxrmi/recordings/asdf","reportUrl":"http://localhost:8181/api/v1/targets/service:jmx:rmi:%2F%2F%2Fjndi%2Frmi:%2F%2Flocalhost:9095%2Fjmxrmi/reports/asdf","metadata":{"labels":{}},"archiveOnStop":false,"id":2,"name":"asdf","state":"STOPPED","startTime":1679954840322,"duration":30000,"continuous":false,"toDisk":true,"maxSize":0,"maxAge":0},"target":"service:jmx:rmi:///jndi/rmi://localhost:9095/jmxrmi"}}

Works well! Looks good to me!