[Fleet] Improve default port experience in the settings UI

[nchaulet]

Summary

Resolve #102623

The different default ports we have could be confusing for the user, that PR try to help user to better understand what port will be used in the settings flyout.

• In the confirm modal, always show the port even for default http|https port (80, 443)
• Add default port in the input label.

UI Changes

cc @mostlyjason

[elasticmachine]

Pinging @elastic/fleet (Team:Fleet)

[nchaulet]

@elasticmachine merge upstream

[nchaulet]

@elasticmachine merge upstream

[kibanamachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request
• Commit: f390be5
• Storybooks Preview

Metrics [docs]

Module Count

Fewer modules leads to a faster build time

id	before	after	diff
fleet	473	474	+1

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
fleet	1014	1016	+2

Async chunks

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

id	before	after	diff
fleet	690.2KB	690.6KB	+457.0B

Page load bundle

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

id	before	after	diff
fleet	440.6KB	441.1KB	+522.0B

Unknown metric groups

API count

id	before	after	diff
fleet	1106	1108	+2

History

• 💔 Build #133278 failed 998ffa7
• 💚 Build #133277 succeeded 8d852d1

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

cc @nchaulet

[kpollich]

LGTM 🚀

[kibanamachine]

💚 Backport successful

Status	Branch	Result
✅	7.x

This backport PR will be merged automatically after passing CI.