Rename googlecloud to gcp in Add Data UI

[kaiyan-sheng]

Summary

With renaming googlecloud to gcp in Metricbeat and Filebeat(elastic/beats#22214), we also need to update Kibana Add Data UI to use the new name.

Checklist

Delete any items that are not applicable to this PR.

• Any text added follows EUI's writing guidelines, uses sentence case text and includes i18n support
• Documentation was added for features that require explanation or tutorials
• Unit or functional tests were updated or added to match the most common scenarios
• Any UI touched in this PR is usable by keyboard only (learn more about keyboard accessibility)
• Any UI touched in this PR does not create any new axe failures (run axe in browser: FF, Chrome)
• If a plugin configuration key changed, check if it needs to be allowlisted in the cloud and added to the docker list
• This renders correctly on smaller devices using a responsive layout. (You can test this in your browser)
• This was checked for cross-browser compatibility

For maintainers

• This was checked for breaking API changes and was labeled appropriately

Screenshots

Metrics:

Logs:

[kibanamachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request
• Commit: 318ace5
• Storybooks Preview

Metrics [docs]

✅ unchanged

History

• 💔 Build #112493 failed 0e93777
• 💔 Build #112455 failed 4353999
• 💔 Build #111305 failed e52aeec
• 💔 Build #111291 failed 6909941

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

cc @kaiyan-sheng