Add (JSON) comments to pinned data (useful for "When Executed by Another Workflow" node for mocked input data)

The idea is:

Now when we use When Executed by Another Workflow node, we can define input schema and in the Pin area we can write input data that we can test with Test Workflow orange button.

To create reliable software I use this Pinned data to create “fake” tests cases (success and error), but i have no way to mark it.
The feature I’m requesting is to add support for writin JSON with comments instead of JSON only in the Pinned area. Like this

My use case:

I’m using a workflow as a tool for an AI Agent, i want to test different inputs in the UI where i can also edit the workflow.

I think it would be beneficial to add this because:

To create reliable software I use this Pinned data to create “fake” tests cases (success and error), but i have no way to mark it.

Are you willing to work on this?

No, becuase of time and missing knowledge of the n8n code.