[UnifiedDataTable] Header row height config doesn't work

[lukasolson]

Kibana version: 8.13+

Describe the bug:

The "Header row height" configuration in the Discover data grid doesn't appear to work.

Steps to reproduce:

1. Open Discover
2. Change the "Header row height"

Nothing appears to change.

Expected behavior:

The header row height changes.

Screenshots (if relevant):

Screen.Recording.2024-07-16.at.10.59.59.AM.mov

[elasticmachine]

Pinging @elastic/kibana-data-discovery (Team:DataDiscovery)

[davismcphee]

@lukasolson The header row height config actually determines the maximum height of the header row instead of an absolute height like the cell row height config (which is admittedly a bit confusing and inconsistent), so I think it will behave as intended if you have a field name that wraps. The EUI team is looking to make the cell row height config also behave as a maximum which should help resolve this inconsistency if all goes well: elastic/eui#7835.

[lukasolson]

Ahh, makes sense. I definitely find it confusing that they are inconsistent, so glad to hear this is being fixed. Maybe we could update the verbiage to reflect that it is the max height.

[kertal]

the plan is to provide something like this, which is more compact, clearer wording, but we need to first check performance impact, since auto fit height is more expensive.

I think we can close this issue, because it works like expected