Stepper: Onboarding flow update tracks events

[agrullon95]

Fixes: #94417
Fixes: #94420
Fixes: #94419
Fixes: #94418

Proposed Changes

• Adds tracks event for plans and domain page step submit with correct props (Stepper: Domains step - ensure calypso_signup_actions_submit_step records the same props as Classic/Start #94417 and Stepper: Plans page - ensure calypso_signup_actions_submit_step Tracks event records the correct props #94420)
• Adds missing props for calypso_signup_plan_select when Plan is selected (product_slug and from_section )
• Adds flow prop to calypso_page_view event

Why are these changes being made?

• Align with /start and be able to analyze important user data

Testing Instructions

• Checkout branch or use live link
• Navigate to /setup/onboarding. Go through the flow and verify the correct events are recorded with necessary props.
• Compare to /start on production to see the latest state then compare against /start on local to ensure both are returning the same events and props.

Pre-merge Checklist

• Has the general commit checklist been followed? (PCYsg-hS-p2)
• Have you written new tests for your changes?
• Have you tested the feature in Simple (P9HQHe-k8-p2), Atomic (P9HQHe-jW-p2), and self-hosted Jetpack sites (PCYsg-g6b-p2)?
• Have you checked for TypeScript, React or other console errors?
• Have you used memoizing on expensive computations? More info in Memoizing with create-selector and Using memoizing selectors and Our Approach to Data
• Have we added the "[Status] String Freeze" label as soon as any new strings were ready for translation (p4TIVU-5Jq-p2)?
• For changes affecting Jetpack: Have we added the "[Status] Needs Privacy Updates" label if this pull request changes what data or activity we track or use (p4TIVU-aUh-p2)?

[github-actions]

Calypso Live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-119908

Jetpack Cloud live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-119908&env=jetpack

Automattic for Agencies live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-119908&env=a8c-for-agencies

[matticbot]

Here is how your PR affects size of JS and CSS bundles shipped to the user's browser:

App Entrypoints (~90 bytes added 📈 [gzipped])

name           parsed_size           gzip_size
entry-stepper       +242 B  (+0.0%)      +90 B  (+0.0%)

Common code that is always downloaded and parsed every time the app is loaded, no matter which route is used.

Legend

What is parsed and gzip size?

Parsed Size: Uncompressed size of the JS and CSS files. This much code needs to be parsed and stored in memory.
Gzip Size: Compressed size of the JS and CSS files. This much data needs to be downloaded over network.

Generated by performance advisor bot at iscalypsofastyet.com.

[escapemanuele]

Domains 🔴

I see the calypso_signup_actions_submit_step event being fired twice. The second time with [object Object], but that is identical to what happens in prod.

Plans 🔴

The event is fired three times.

calypso_signup_plan_select 🟢

calypso_page_view 🟢

[renancarvalho]

Checking on live link

For #94417, the domain_item is empty
For #94420 cart items still wrong

#94419 is good ✅
#94418 is good ✅

[escapemanuele]

Thank you @renancarvalho!

• Domains: The value is empty when you select the free domain, so that should be fine
• Plans: Yes, we changed to reflect how it is in /start

[matticbot]

This PR modifies the release build for the following Calypso Apps:

For info about this notification, see here: PCYsg-OT6-p2

• notifications
• wpcom-block-editor

To test WordPress.com changes, run install-plugin.sh $pluginSlug update/stepper-onboarding-events-v1 on your sandbox.

[escapemanuele]

Opened #94708 as a follow-up