In #11635 we implemented ecs_compatibility, where necessary, for (supported) plugins.
The work in #11635 mostly involved tier 1 plugins but we also made sure no (tier 1 or 2) plugins conflict with the ECS schema.

For codecs we often warn on a missing target and fill event.original, if possible, when ecs_compatibility is enabled.
This hasn't been implemented for Tier 2 codecs only Tier 1 (we still added target to most so users can manage ECS conflicts).

• (Tier 2 Supported) Codecs
  • EDN Codec
  • EDN Lines Codec
  • Fluent Codec
  • Graphite Codec
  • MsgPack Codec
  • Netflow Codec
  • Collectd Codec

Follow-up work after #11635