Kibana version: Main (8.1)

Describe the bug:

Looks like logic for extracting type from a field for <FieldIcon/> is different in different places in discover.
For example, discover's document table always displays string fields icons as string, but the field list displays an underlying es type (e.g. version or text)

Steps to reproduce:

1. Create a field of type version or text
2. See how it is displayed in Discover in the field list and in the document grid.
3. They are displayed differently

Expected behavior:

They should be displayed in the same manner in different places.

Screenshots (if relevant):

Any additional context:

Noticed in: #123739