Kibana version: 9.2.1

Elasticsearch version: 9.2.1

Original install method (e.g. download page, yum, from source, etc.): Docker

Describe the bug:

Lens visualizations using top values and configured to "include documents without the selected field" show missing values as __missing__. In 9.1.4 this is represented as (missing value).

Steps to reproduce:

1. Index two documents where one of the documents have the field as null.
2. Create a data view and a lens visualization, e.g. table.
3. Add the field to rows using top values and enable "include documents without the selected field" under "Advanced".

Expected behavior: Missing values should not be shown using the Kibana-internal __missing__ value (this is not a user-facing label).

Screenshots (if relevant):