Remove launch button in the page editor

[simison]

Let's remove the launch button in the editor for now and have another round of design work to find a better placement for it.

We have enough subjective evidence that the "launch" button in the editor header is confusing customers:

• Issues After page edit: not obvious what "Launch" does #52590 "Launch" button is confusing #52561 Gutenboarding pre-launch: Update CTA button label in the editor #41211

• Internal & user testing bring this up frequently (recent p1621458244077600-slack-dotcom-pod-design-selection and p58i-avT-p2)

• Layout breaks easily, even on bigger screens, especially with languages where texts are longer (Gutenberg mobile editor: Misaligned Header items #50758)

  

• Translating "publish" and "launch" has been challenging (p1604066018174600-slack-luna):

  

  The above has since been updated, but terms are still often close at quick glance and show how this might be challenging in other locales as well:

  

Context

Initially, when designed & implemented (#39048), the "Publish" button was relabelled as "Save" because it was causing issues with React (#42508).

Adjusting terminology is challenging because it's coming from the core (pbAok1-BD-p2), and needs to be updated in quite a few places to be consistent.

We also have few other areas where people can launch their sites:

• Frontend preview

  

• Settings (though this is hidden for sites with WP-Admin nav unification views enabled)

  

• Site setup checklist (excluding Atomic sites but that's being fixed, see Atomic sites don't have site setup checklist enabled at customer home #50523)

  

Next

• Remove the launch button and resume regular functionality in the editor, and observe analytics and user testing.
• I know we have the "focused launch" flow starting from this point; the goal is to expand that flow to other places as well and not depend on this one button.
• Explore other placements for launch. Better design placement for this action might be within the FSE site editor. We might even have some earlier designs around.