[Automatic Import] Copy related information from more fields

[ilyannn]

Context

LLM was previously trying to add information from fields that are not simply accessible, e.g. inventing the syntax like:

ai_falcon_202410141910.audit.event.AuditKeyValues.[?Key=='assigned_to_uid'].ValueString | [0] 

Since this syntax does not exist, we have restricted LLM In #196207 from seeing these fields.

Action Item

We can check the approach used for accessing this field in manually created integrations and implement similar way in Automatic Import.

See https://elastic.slack.com/archives/C063A65FKQ8/p1728979224510749 for the discussion.