[Lens] [Unified Search] Fix field truncation on Combo boxes

[mbondyra]

Summary

Fixes 3/5 of #168753
Doesn't set up multilines. Doesn't remove auto-expanding logic. Middle truncates.

(Unified Search) Field selector

(Unified Search) Value selector:

(Lens) Field picker within layer config:

Also fixes tiny stylistic issue for dataview picker label cut on the bottom:

[elasticmachine]

Pinging @elastic/kibana-visualizations (Team:Visualizations)

[dej611]

I see a general improvement with this PR with all fields with long names.

Found some bugs, but unsure whether they are strictly related with the scope of this PR or need to be fixed in a next iteration (either way I'm fine):

• If the selected field name is very long it can overflow the filter popover
  (On Edge browser)

(On Safari browser)

• it seems values are now showing up in the filter values section:

But I see values when aggregating:

[dej611]

do we still need this div?

[mbondyra]

you're right, nope!

[kibana-ci]

💚 Build Succeeded

• Buildkite Build
• Commit: c60d467

Metrics [docs]

Module Count

Fewer modules leads to a faster build time

id	before	after	diff
eventAnnotationListing	456	454	-2
lens	1136	1135	-1
unifiedSearch	216	215	-1
total			-4

Public APIs missing comments

Total count of every public API that lacks a comment. Target amount is 0. Run node scripts/build_api_docs --plugin [yourplugin] --stats comments for more detailed information.

id	before	after	diff
@kbn/visualization-ui-components	152	151	-1

Async chunks

Total size of all lazy-loaded chunks that will be downloaded as the user navigates the app

id	before	after	diff
eventAnnotationListing	198.0KB	196.9KB	-1.1KB
lens	1.4MB	1.4MB	-1009.0B
unifiedSearch	215.6KB	213.7KB	-2.0KB
total			-4.1KB

Unknown metric groups

API count

id	before	after	diff
@kbn/visualization-ui-components	156	154	-2

History

• 💔 Build #176106 failed 1c963fd
• 💛 Build #176047 was flaky a2cf11e
• 💛 Build #175635 was flaky f9a2e6d
• 💔 Build #175595 failed 53f969c44c8fac2f84f93b299ba1ee4357b26b88
• 💔 Build #175564 failed cc78ed2a22c9fca85c1c017e4565cb8e18f79705

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@elasticmachine merge upstream