[Fleet] Fix max width issue in policy editor

[kpollich]

Summary

Closes #145909

Fix max width issue with Fleet policy editor, likely due to upstream EUI change and some custom CSS we had to fiddle with some flex widths.

Screen.Recording.2022-11-21.at.2.09.05.PM.mov

Also fixed some typos/leftover code that was floating around here.

[elasticmachine]

Pinging @elastic/fleet (Team:Fleet)

[kibana-ci]

💚 Build Succeeded

• Buildkite Build
• Commit: 06c9da6

Metrics [docs]

Async chunks

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

id	before	after	diff
fleet	889.2KB	888.9KB	-295.0B

Unknown metric groups

ESLint disabled in files

id	before	after	diff
osquery	1	2	+1

ESLint disabled line counts

id	before	after	diff
enterpriseSearch	19	21	+2
fleet	59	65	+6
osquery	109	115	+6
securitySolution	443	449	+6
total			+20

Total ESLint disabled count

id	before	after	diff
enterpriseSearch	20	22	+2
fleet	68	74	+6
osquery	110	117	+7
securitySolution	520	526	+6
total			+21

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

cc @kpollich

[nchaulet]

LGTM!