Discover side panel truncates field names

[lizozom]

Kibana version:
master

Describe the bug:
In Discover, long field names are truncated in the side bar.

Steps to reproduce:

1. Go to discover
2. Long field names are truncated

Expected behavior:
Field names should be visible somehow.

Screenshots (if relevant):

Errors in browser console (if relevant):

Provide logs and/or server output (if relevant):

Any additional context:

[kertal]

Thx for reporting! very true ... but it looks like this is an older version, filename truncation was removed in 7.10
#71312