Prepare Analytics setup form UI for split into four sub-variants (depending GA4 support and available properties)

[danielgent]

Summary

Addresses issue #3247

Relevant technical choices

Checklist

• My code is tested and passes existing unit tests.
• My code has an appropriate set of unit tests which all pass.
• My code is backward-compatible with WordPress 4.7 and PHP 5.6.
• My code follows the WordPress coding standards.
• My code has proper inline documentation.
• I have added a QA Brief on the issue linked above.
• I have signed the Contributor License Agreement (see https://cla.developers.google.com/).

[github-actions]

Size Change: +240 B (0%)

Total Size: 1.29 MB

Filename	Size	Change
./dist/assets/js/googlesitekit-adminbar.********************.js	67.4 kB	-1 B (0%)
./dist/assets/js/googlesitekit-api.********************.js	9.39 kB	-3 B (0%)
./dist/assets/js/googlesitekit-dashboard-details.********************.js	79 kB	-2 B (0%)
./dist/assets/js/googlesitekit-dashboard-splash.********************.js	49.4 kB	+26 B (0%)
./dist/assets/js/googlesitekit-dashboard.********************.js	79.6 kB	-2 B (0%)
./dist/assets/js/googlesitekit-data.********************.js	1.65 kB	-1 B (0%)
./dist/assets/js/googlesitekit-datastore-forms.********************.js	9.06 kB	+1 B (0%)
./dist/assets/js/googlesitekit-datastore-location.********************.js	2.03 kB	+2 B (0%)
./dist/assets/js/googlesitekit-datastore-site.********************.js	12.5 kB	-2 B (0%)
./dist/assets/js/googlesitekit-datastore-ui.********************.js	9.02 kB	+1 B (0%)
./dist/assets/js/googlesitekit-datastore-user.********************.js	16 kB	+1 B (0%)
./dist/assets/js/googlesitekit-module.********************.js	79.7 kB	-1 B (0%)
./dist/assets/js/googlesitekit-modules-adsense.********************.js	57.1 kB	+3 B (0%)
./dist/assets/js/googlesitekit-modules-analytics-4.********************.js	11.6 kB	+1 B (0%)
./dist/assets/js/googlesitekit-modules-analytics.********************.js	63 kB	+241 B (0%)
./dist/assets/js/googlesitekit-modules-optimize.********************.js	17.6 kB	-7 B (0%)
./dist/assets/js/googlesitekit-modules-pagespeed-insights.********************.js	24.3 kB	+3 B (0%)
./dist/assets/js/googlesitekit-modules-search-console.********************.js	27.9 kB	-5 B (0%)
./dist/assets/js/googlesitekit-modules-tagmanager.********************.js	31.6 kB	+4 B (0%)
./dist/assets/js/googlesitekit-modules.********************.js	17.2 kB	+3 B (0%)
./dist/assets/js/googlesitekit-settings.********************.js	87 kB	-6 B (0%)
./dist/assets/js/googlesitekit-user-input.********************.js	84.4 kB	-4 B (0%)
./dist/assets/js/googlesitekit-vendor.********************.js	271 kB	-8 B (0%)
./dist/assets/js/googlesitekit-widgets.********************.js	11.5 kB	-1 B (0%)
./dist/assets/js/googlesitekit-wp-dashboard.********************.js	67.2 kB	-3 B (0%)

ℹ️ View Unchanged

Filename	Size	Change
./dist/assets/css/admin.css	36.1 kB	0 B
./dist/assets/css/adminbar.css	7.33 kB	0 B
./dist/assets/css/wpdashboard.css	4.43 kB	0 B
./dist/assets/js/analytics-advanced-tracking.js	769 B	0 B
./dist/assets/js/googlesitekit-activation.********************.js	35.5 kB	0 B
./dist/assets/js/googlesitekit-base.********************.js	1.57 kB	0 B
./dist/assets/js/googlesitekit-i18n.js	3.92 kB	0 B
./dist/assets/js/googlesitekit-modules-idea-hub.********************.js	9.63 kB	0 B
./dist/assets/js/runtime.********************.js	763 B	0 B

_{compressed-size-action}

[eugene-manuilov]

Thanks, @danielgent. It mostly looks good to me. Just added a few comments to fix formatting and storybook issues.

[eugene-manuilov]

Thanks, @danielgent. A few more comments:

[eugene-manuilov]

LGTM! Thanks, @danielgent.