[Security Solution][Serverless] Implements panelContentProvider on the DefaultNavigation

[semd]

Summary

Implements the panelContentProvider for the DefaultNavigation component, so the content of the panels when open is provided by the Security Solution plugin.

In order to test it, the experimental flag needs to be enabled.
In config/serverless.security.yml add:

xpack.securitySolutionServerless.enableExperimental: ['platformNavEnabled']

Screenshot

(The vertical separation of the main nav links is still not implemented by the DefaultNavigation)

[elasticmachine]

Pinging @elastic/security-threat-hunting (Team:Threat Hunting)

[angorayc]

Tested with feature on and off, both looked fine, LGTM!

[semd]

@elasticmachine merge upstream

[semd]

@elasticmachine merge upstream

[semd]

@elasticmachine merge upstream

[kibanamachine]

merge conflict between base and head

[semd]

@elasticmachine merge upstream

[kibana-ci]

💚 Build Succeeded

• Buildkite Build
• Commit: ee45988

Metrics [docs]

Module Count

Fewer modules leads to a faster build time

id	before	after	diff
securitySolutionServerless	476	478	+2

Async chunks

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

id	before	after	diff
securitySolution	13.0MB	13.0MB	+145.0B
securitySolutionServerless	332.9KB	333.2KB	+327.0B
total			+472.0B

Page load bundle

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

id	before	after	diff
securitySolutionServerless	41.8KB	39.3KB	-2.5KB

Unknown metric groups

async chunk count

id	before	after	diff
securitySolutionServerless	42	43	+1

ESLint disabled line counts

id	before	after	diff
securitySolutionServerless	35	36	+1

Total ESLint disabled count

id	before	after	diff
securitySolutionServerless	35	36	+1

History

• 💛 Build #169719 was flaky 25da874
• 💛 Build #169597 was flaky 58a8d3a
• 💔 Build #169468 failed b0c7ada
• 💔 Build #169325 failed 7f31283
• 💔 Build #169150 failed 6fff74d
• 💔 Build #169128 failed 8b88fb8

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

cc @semd

[sebelga]

Changes to chrome service mock LGTM 👍