Premium Analytics: expand the feedback confirmation message

[chihsuan]

Fixes UNI-758

Proposed changes

• Replace the post-submit confirmation in the Stats v2 feedback modal, which read "Thank you. This helps.", with copy that says where the feedback went and what it is used for.
• Render it as a Notice.Title plus a Notice.Description so the headline and the explanation read as two parts.
• Cover both sentences in the options-menu tests, on the success path and on the endpoint-failure path.

The copy is Gary's from UNI-758, with a comma added to the first line ("Thanks, your feedback has gone to the team.") because the issue text was missing one.

Related product discussion/links

• UNI-758

Does this pull request change what data or activity we track or use?

No. The submission path is untouched: the same Tracks event fires, and a non-empty comment still reaches the Stats feedback endpoint.

Testing instructions

1. Open Stats v2 on a connected site: Stats v2 in the admin menu.
2. Open the page options menu (the three dots at the top right) and pick Any feedback?.
3. Pick any rating and press Send feedback.
4. The success notice should read "Thanks, your feedback has gone to the team." in bold, followed by "It'll help us decide what to fix before the new Traffic tab replaces the old one. You can send more any time from the same menu."

• Done should still close the modal, and reopening the menu should let you send feedback again.

Note: Step 3 sends a real submission. The dashboard does not pass is_testing, so a comment reaches Happiness and opens a Zendesk ticket. Either add is_testing: true to the body in submitStatsUserFeedback while you test, or resolve the ticket afterwards.

[github-actions]

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bin/jetpack-downloader test jetpack-mu-wpcom-plugin change/uni-758-feedback-confirmation

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Code Coverage Summary

This PR did not change code coverage!

That could be good or bad, depending on the situation. Everything covered before, and still is? Great! Nothing was covered before? Not so great. 🤷

Full summary · PHP report · JS report

[Nikschavan]

Thank you, the changes look good.

[dognose24]

LGTM! Copy matches UNI-758, Notice.Title is available in @wordpress/ui 0.21, and both the success and endpoint-failure paths are covered in the tests.