[Fleet] Fix links to Logs view to point to Discover in Serverless

[criamico]

Fixes #168349

Summary

Fix links to Logs view to point to Discover in Serverless.

As the Logs view UI is not available in serverless, the "Open in logs" buttons should point to Discover instead. Rather than hardcode the url in each of the places where is needed, I extracted a small component that builds the two urls and allows switching in an easier way.
If in the future on of the two links will go away, it will be easier to find those occurrences.

Testing

Test for serverless following these instructions

Error logs in agent activity flyout

• Enroll an agent and try to cause some error - for instance upgrading an agent that is not upgradeable
• Click on "Agent Activity" and find the error and a button besides it
• On stateful the button says "Open in Logs"

• On serverless is "Open in discover"

• Check that both show the same logs:

Agent logs
(Same test as above)

• Enroll an agent
• Click on the agent and go to the "Logs" tab
• On stateful the button says "Open in Logs"

• On serverless is "Open in discover"

• Check that both show the same logs

Custom Logs UI
There is also a link to logs on custom logs UI but I just linked to discover for that one: https://github.com/elastic/kibana/pull/171525/files#diff-e337aa916d60d0d1033e3298c8c9c33c6a6fcd87a8ded971a4a87f5ccfc0981fR20-R22

[apmmachine]

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• /oblt-deploy : Deploy a Kibana instance using the Observability test environments.
• /oblt-deploy-serverless : Deploy a serverless Kibana instance using the Observability test environments.
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[criamico]

@elasticmachine merge upstream

[elasticmachine]

Pinging @elastic/fleet (Team:Fleet)

[nchaulet]

Some small suggestions but otherwise LGTM 🚀

[kibana-ci]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: ac35f84

Failed CI Steps

• Security Solution Cypress Tests #8

Test Failures

• [job] [logs] Security Solution Cypress Tests #8 / url state sets and reads the url state for timeline by id sets and reads the url state for timeline by id

Metrics [docs]

Module Count

Fewer modules leads to a faster build time

id	before	after	diff
fleet	947	948	+1

Async chunks

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

id	before	after	diff
fleet	1.2MB	1.2MB	+29.0B

Page load bundle

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

id	before	after	diff
fleet	151.6KB	151.6KB	+75.0B

History

• 💔 Build #176897 failed 27f7ee7
• 💔 Build #176888 failed e145ebb

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

cc @criamico