[Maps] Show incomplete data bounds

[thomasneirynck]

If Maps detects that the search-results for a query are incomplete (e.g. due to hitting the 10k limit), the layer shows a bounding box (e.g. with a hashed pattern) of where the data is located. This can prompt the user to further zoom in.

Right now, a user is only notified of the "incomplete-data" icon the layer-TOC.

This can be an optional feature on the layer-level.

Now that Elasticsearch geo_bounds agg is available for both geo_point and geo_shape, we should consider making this a generic feature for any ES-document layer.

(This was also implemented in the vector tiling POC (#57248). It could work regardless of the data-format in which the documents are delivered.)

cc @maihde

[elasticmachine]

Pinging @elastic/kibana-gis (Team:Geo)

[thomasneirynck]

Should consider as part of #58519 as well

[thomasneirynck]

Closed with #114553