[Feature] Extend load_related to direct Child[].

[gusinacio]

Description

Currently, the `load_related()` host function only works with `derivedFrom` fields. We could use the same function for loading childs in a more explicit way instead of looping and loading each one by one.

Are you aware of any blockers that must be resolved before implementing this feature? If so, which? Link to any relevant GitHub issues.

The PR #4434 must be merged before this is a valid request.

Some information to help us out

• Tick this box if you plan on implementing this feature yourself.
• I have searched the issue tracker to make sure this issue is not a duplicate.

[github-actions]

Looks like this issue has been open for 6 months with no activity. Is it still relevant? If not, please remember to close it.