chore(kamelet): remove bean and ref error handler types

[squakez]

• Remove bean and ref error handlers
• Deprecate dead-letter-channel in favour of sink

Closes #2815

Release Note

chore(kamelet): polish error handler

[squakez]

FYI @davsclaus

[davsclaus]

Added ticket for camel core to support sink
https://issues.apache.org/jira/browse/CAMEL-17388

[squakez]

Added ticket for camel core to support sink https://issues.apache.org/jira/browse/CAMEL-17388

Thanks @davsclaus. I understand the issue opened for camel core is to take the opportunity and rename the definition in the core as well. However that is not required for Camel K, as we rely on the configuration of the org.apache.camel.builder.DeadLetterChannelBuilder class. If we changed the Builder class name, then we'd need to sync the implementation for Camel K as well.

[davsclaus]

Yeah its not a problem for camel-k, its for camel core itself, with camel-jbang/karavan where we can load kamelet binding files also (for development)