fix target entities creating for check suite events

[zolamk]

Describe the bug

The creation of target entities for check suite events doesn't seem to be correct and seems to be creating invalid target entities, we need to investigate what the issue is and fix it.

How to reproduce

https://eu-central-1.console.aws.amazon.com/cloudwatch/home?region=eu-central-1#logsV2:log-groups/log-group/$252Faws$252Flambda$252FRaasStackProdv4EventHandler/log-events$3FfilterPattern$3D$257B$2524.delivery_id$253D$25227a5d5b90-09c5-11ee-9756-d6cd09aeabf2$2522$257D$26start$3D-43200000

Expected behavior

handler should create valid target entities