Fix: Run with reporting disabled

[w33ble]

Closes #25728

Fixes reporting import and config checking.

• Imports from file directly, instead of statically via the plugins alias
• Wraps config.get so it doesn't throw when reporting is disabled

To test, simply set xpack.reporting.enabled: false in your kibana.yml. Previously, it would fail to build, and crash the server even if it would.

[elasticmachine]

Pinging @elastic/kibana-canvas

[elasticmachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request

[rashidkpc]

• Reproduced
• Checked that Kibana starts
• Checked that attempting to export a report when reporting is disabled fails:

[stacey-gammon]

Why is the error message calling out Chromium instead of the enabled/disabled setting? Just might be confusing since chromium is the default now, so they shouldn't actually have to add that, just make sure it's not set to phantom, and make sure it's not disabled.

[w33ble]

@stacey-gammon yeah, I was thinking about that too. Planning to make a follow-on PR that shows a different message when Reporting is just disabled. Opened #26357 to track it.

[clintandrewhall]

Just FYI: your test plan states one should

set xpack.reporting.disabled

That threw an error for me. Did a quick search, found it was xpack.reporting.enabled: false. :-)

Otherwise, all went well. Apologies for my delay in review...!

[w33ble]

@clintandrewhall I really should proof-read what I write I guess, heh. Thanks for the review.

[w33ble]

Quick refactor and addition after testing on master. It was broken there too, in a different way, thanks to code duplication (as mentioned in #26375).

Was seeing this error:

server   error  [21:02:08.523]  Error: Unknown config key: xpack.reporting.capture.browser.type
    at Config.get (/repos/kibana/src/server/config/config.js:140:15)
    at server.injectUiAppVars (/repos/kibana/src/core_plugins/interpreter/init.js:28:41)
    at injectedVarProviders.filter.reduce (/repos/kibana/src/ui/ui_apps/ui_apps_mixin.js:62:18)
    at <anonymous>

[elasticmachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request

[w33ble]

6.5 fe7b69b
6.x c658f44