Query-related events don't include the name of the query class

All of the operation-related events contain the name of the operation but the query events don't.

Operation event example: https://github.com/luckyframework/avram/blob/5e29f75371dca5a2bc16858163dc3790cabfbfcb/src/avram/events/delete_failed_event.cr#L5

Events needing the query class name:
- https://github.com/luckyframework/avram/blob/5e29f75371dca5a2bc16858163dc3790cabfbfcb/src/avram/events/query_event.cr#L4
- https://github.com/luckyframework/avram/blob/5e29f75371dca5a2bc16858163dc3790cabfbfcb/src/avram/events/failed_query_event.cr#L4

Start by comparing src/avram/events/query_event.cr and src/avram/events/failed_query_event.cr with src/avram/events/delete_failed_event.cr, which demonstrates the expected operation name. Update the query events so they include the query class name, then verify that both event payloads expose it consistently.

Written by the indexing model from the issue text.