[BUG] Overriding field type in index pattern not working as it should

[sandervandegeijn]

Describe the bug

We changed the mapping from string to date for a field on the opensearch side. This is picked up by dashboards, but in the drop down I can't select the date type:

I don't why URL is there, but date is missing.

Expected behavior URL is gone, date is added alongside the string option

OpenSearch Version 2.14.0

Dashboards Version 2.14.0

Plugins

Default docker image

Screenshots

^^

Host/Environment (please complete the following information): ^^

Additional context

Add any other context about the problem here.