[Fleet] Make security rules package optional (revert #97191)

[rw-access]

Summary

Per some conversations with PM, the security_detection_engine package will be optional in 7.13.
This reverts the relevant parts of #97191. (Doesn't revert the updated dependencies)

[elasticmachine]

Pinging @elastic/fleet (Team:Fleet)

[elasticmachine]

Pinging @elastic/fleet (Feature:EPM)

[nchaulet]

🚀

[kibanamachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request
• Commit: 2614f27
• Storybooks Preview

Metrics [docs]

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
globalSearch	13	-	-13
reporting	130	-	-130
total			-143

Any counts in public APIs

Total count of every any typed public API. Target amount is 0. Run node scripts/build_api_docs --plugin [yourplugin] --stats any for more detailed information.

id	before	after	diff
reporting	1	-	-1

Public APIs missing exports

Total count of every type that is part of your API that should be exported but is not. This will cause broken links in the API documentation system. Target amount is 0. Run node scripts/build_api_docs --plugin [yourplugin] --stats exports for more detailed information.

id	before	after	diff
globalSearch	6	-	-6
reporting	18	-	-18
total			-24

Page load bundle

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

id	before	after	diff
fleet	346.8KB	346.7KB	-52.0B

Unknown metric groups

API count

id	before	after	diff
globalSearch	67	-	-67
reporting	131	-	-131
total			-198

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

[kibanamachine]

💚 Backport successful

Status	Branch	Result
✅	7.13
✅	7.x

The backport PRs will be merged automatically after passing CI.