[8.x](backport #42116) Add support for recursive structures in packetbeat's ECS field handlers #42283
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Proposed commit message
fixes #42108
This fixes the behavior of
MarshalMapStr()
so that it'll properly recurse through nested structs when turning theecs.Fields
object into a map. This might technically be a breaking change, since theprocess.parent
field willnow produce a different (but correct) map.
Checklist
CHANGELOG.next.asciidoc
orCHANGELOG-developer.next.asciidoc
.This is an automatic backport of pull request #42116 done by [Mergify](https://mergify.com).