Localise the launch sidebar and final launch step

[p-jackson]

Just like #46552, we were missing something simple to get the low-hanging fruit of l10n going for the launch modal.

Plugins are supposed to call wp_set_script_translations when enqueueing internationised scripts:
https://developer.wordpress.org/apis/handbook/internationalization/#internationalizing-javascript

When you call wp_set_script_translations it will (by default) grab the translations from translate.wordpress.org, which has already translated the ETK: https://translate.wordpress.org/locale/es/default/wp-plugins/full-site-editing/

If you look at other scripts that are enqueued by ETK they're already doing this. So it was just us that had forgotten :D

Changes proposed in this Pull Request

• Call wp_set_script_translations after enqueueing the launch JS

Testing instructions

• Checkout branch, yarn dev --sync, and sandbox an unlaunched gutenboarding site
• Switch user to a non-english langage
• Open a page in the editor
• Click the "Complete Setup" button in the top right of the editor, which should open the modal launch flow (not the one that redirects to another page)
  • The launch sidebar on the right should be translated
  • The final step in the launch flow should be translated

The domain picker and plan picker won't be translated. They come from a shared package that isn't using the full-site-editing text domain, which we still need to figure out.

[matticbot]

Test live: https://calypso.live/?branch=update/etk-user-translations-for-launch-sidebar

[matticbot]

Caution: This PR affects files in the Editing Toolkit Plugin on WordPress.com
Please ensure your changes work on WordPress.com before merging.

D51377-code has been created so you can easily test it on your sandbox. See this FieldGuide page about developing the Editing Toolkit Plugin for more info: PCYsg-ly5-p2

[matticbot]

This PR does not affect the size of JS and CSS bundles shipped to the user's browser.

Generated by performance advisor bot at iscalypsofastyet.com.

[autumnfjeld]

@p-jackson Tested in German. I can confirm that after clicking "Complete Setup" the launch sidebar was in German. However the following step led me here. I'm not sure if that is the "final step in the launch flow"

It says "Blog is now live"

[p-jackson]

@autumnfjeld that's strange, I don't know how it would have jumped to the publishing sidebar ...

The "final step in the launch flow" is called "Launch your site". I should have just said what the step was called, but it was in another language so didn't know what it was actually called 😆

This is what the in-editor launch flow looks like, just to make sure we're both talking about the same thing.

[autumnfjeld]

Confirmed the following (starting from /new to ensure Gutenboarding flow):

• The launch sidebar on the right should be translated
• The final step in the launch flow should be translated
  for fr, es, ge

[autumnfjeld]

Verified with french, german, spanish
👍

[p-jackson]

Thanks!

Kinda looks like there's something up with this French translation, almost like an html escape has been used instead of a regular utf character.

🤷

[autumnfjeld]

Thanks!

Kinda looks like there's something up with this French translation, almost like an html escape has been used instead of a regular utf character.

🤷

Good eye!!! I looked it up: ê == ê
Should say: Vous y êtes