Expanding/collapsing fields is broken when there's dates in the JSON

[Philippus]

Kibana version:
8.15.3

Elasticsearch version:
8.15.3

Server OS version:
macOS
Browser version:
Firefox and also Chrome
Browser OS version:
Firefox 132.0.1 / Chrome 131.0.6778.70
Original install method (e.g. download page, yum, from source, etc.):
n/a
Describe the bug:
Expanding/collapsing fields is broken when there's dates in the JSON
Steps to reproduce:
add the following document to Elasticsearch

POST testcollapse/_doc/1
{
  "fields": {
    "dates": {
      "publication_date": "2022-09-23T03:42:23Z",
      "release_date": "2024-11-15T08:34:37.857843763Z"
    },
    "variants": {
      "a" : "a",
      "b" : "b"
    }
  },
  "other_fields": {
    "a": "b"
  }
}

GET testcollapse/_doc/1

Try to collapse the "fields"-field with the down arrow on line 9, the "other-fields" is "swallowed up" in the collapsing"
Or
Click on the up arrow on line 13, it will be marked in red.

I think it has something to do with the fact that the two date fields are dates. If they are strings, the field is collapsed correctly.

Expected behavior:
Should be collapsed correctly.

Screenshots (if relevant):

Errors in browser console (if relevant):
n/a
Provide logs and/or server output (if relevant):
n/a
Any additional context:

[elasticmachine]

Pinging @elastic/apm-ui (Team:APM)

[elasticmachine]

Pinging @elastic/kibana-management (Team:Kibana Management)

[sabarasaba]

We have then migrated the console editor to monaco and this bug has been fixed as a consequence of that