Summary

In this pull request we're adding a heartbeat to thehandleParameterWebsocket function to ensure that the connection stays open until the 30 min timeout has been reached.

Closes:#19805

Testing

• Reproduced the problem mentioned in the issue (websocket connection closes after ~10 minutes of inactivity on the create workspace page)

• Confirmed that adding the heartbeat kept the connection open until the 30 min timeout was reached