EA: User/host details flyouts and asset criticality enhancements pt2

[natasha-moore-elastic]

Description

This issue collects enhancement suggestions from the User/host details flyouts + Asset criticality serverless PR that weren't addressed in #4913 as they require PM input.

• https://github.com/elastic/staging-serverless-security-docs/pull/280/files#r1520401820
• https://github.com/elastic/staging-serverless-security-docs/pull/280/files#r1521988040
• https://github.com/elastic/staging-serverless-security-docs/pull/280/files#r1521783941
• https://github.com/elastic/staging-serverless-security-docs/pull/280/files#r1520392042

Related links / assets

No response

Which documentation set needs improvement?

ESS and serverless

Software version

8.13+

Collaborators

PM: TBD

Timeline / deliverables

N/A