Previously, we were not properly rejecting the submission, so that the channel name was still evaluated (leading to errors). Now, we handle these cases as well.
Fixes CODEOCEAN-V2
This change allows us to use the session ID immediately for the connection_change and connection_status methods. Hence, we can identify different browser sessions of the same user.
* This commit refactors the table used to store events.
* We also use a UUID as session identifier in the synchronized editor to support multiple concurrent tabs opened by the same user.
* Further, we renamed some methods to make them easier to distinguish.
