[7.10] Adjust encoding for security management pages (#83629)

[legrego]

Backports the following commits to 7.10:

• Adjust encoding for security management pages (Adjust encoding for security management pages #83629)

[kibanamachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request
• Commit: c65cf9a

Metrics [docs]

Module Count

Fewer modules leads to a faster build time

id	before	after	diff
security	463	464	+1

Async chunks

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

id	before	after	diff
security	1.0MB	1.0MB	+11.0B

Page load bundle

Size of the bundles that are downloaded on every page load. Target size is below 100kb

id	before	after	diff
security	172.1KB	172.7KB	+672.0B

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