Fix reset-offset not working with a non-existing consumer group

[ThomasCAI-mlv]

Rootcause
In Kafka 4 adminClient, AdminClient.describeConsumerGroups(groupIds).all() would complete exceptionally when given at least one non-existing groupId in groupIds, throwing an ExecutionException (GroupIdNotFoundException).
This error was not handled as it would complete normally with a DEAD group prior to the KIP1043.

Implementation

• Added a try-catch block to handle the ExecutionException, and returning an EMPTY group state.
• Then it is no longer possible to get a DEAD group state (TBC), but it is kept for retro compatibility with Kafka server 3.X
• Added more precision to the "Reset-offset" error message, as the consumer group will be considered DEAD after the time defined by session.timeout.ms (as mentioned in Apache Kafka)

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

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