Backport of Fix overly-eager jsonencode into v1.10

[github-actions]

Backport

This PR is auto-generated from #35984 to be assessed for backporting due to the inclusion of the label 1.10-backport.

🚨

Warning automatic cherry-pick of commits failed. If the first commit failed,
you will see a blank no-op commit below. If at least one commit succeeded, you
will see the cherry-picked commits up to, not including, the commit where
the merge conflict occurred.

The person who merged in the original PR is:
@radeksimko
This person should manually cherry-pick the original PR into a new backport PR,
and close this one when the manual backport PR is merged in.

merge conflict error: unable to process merge commit: "3eadcc1ab223441a31ee0663ed37952fc43b056e", automatic backport requires rebase workflow

The below text is copied from the body of the original PR.

---

Fixes #35983

Target Release

1.9.9

Draft CHANGELOG entry

BUG FIXES

• Simplify config generation (plan -generate-config-out) for string attributes that contain primitive types (e.g. numbers or booleans)

---

Overview of commits

• 8e90c53

• 3eadcc1

• efa6a3b

[github-actions]

Reminder for the merging maintainer: if this is a user-visible change, please update the changelog on the appropriate release branch.

[github-actions]

I'm going to lock this pull request because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active contributions.
If you have found a problem that seems related to this change, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.