[Security Solution][Exceptions] - Make exceptions read only when displaying deleted rule details

[yctercero]

Summary

Addresses 141899.

When displaying a rule that has since been deleted, the exception tabs will render as read only.

Also took opportunity to address follow up copy edit from #141682 (comment)

Checklist

• Any text added follows EUI's writing guidelines, uses sentence case text and includes i18n support
• Documentation was added for features that require explanation or tutorials
• Unit or functional tests were updated or added to match the most common scenarios
• Any UI touched in this PR is usable by keyboard only (learn more about keyboard accessibility)
• Any UI touched in this PR does not create any new axe failures (run axe in browser: FF, Chrome)
• If a plugin configuration key changed, check if it needs to be allowlisted in the cloud and added to the docker list
• This renders correctly on smaller devices using a responsive layout. (You can test this in your browser)
• This was checked for cross-browser compatibility

[elasticmachine]

Pinging @elastic/security-solution (Team: SecuritySolution)

[kibana-ci]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: dab4acf

Failed CI Steps

• Security Solution Tests #1

Test Failures

• [job] [logs] Security Solution Tests #1 / Detection rules, bulk edit Prerequisites "before each" hook for "Prebuilt and custom rules selected: user proceeds with custom rules editing"

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
securitySolution	6.6MB	6.6MB	+120.0B

History

• 💔 Build #76961 failed 0f1505d

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

cc @yctercero

[jpdjere]

Detection Rules LGTM 👍

[dhurley14]

Looks good to me. Thanks for covering this edge case!

[kibanamachine]

💚 All backports created successfully

Status	Branch	Result
✅	8.5

Note: Successful backport PRs will be merged automatically after passing CI.

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