Fixes #2448 (tab wrapping in Japanese). Also ensures that none of the Sprite info area wraps. Does not address the issue where the sprite info area is too big and pushes the stage info off the screen.

And implement toggle on player playground

Fixes issue with changing language, and hopefully player/editor mode (untested).

This is for demonstration purposes, if this is the way we decide, I will make official APIs on the VM and the Renderer for checking for the canvas and renderer.

I don't love this solution, but I remember not being able to figure out a way to not specify the max width because it is needed in order for the flowing to work. Without the max-width, the sprite tiles try to be in a row, pushing over everything else.

* refactor LanguageSelector to reuse MenuBarMenu
* localize aria-labels on MenuBar

Fixes integration test which was failing trying to use the context menu

Allows the language selection menu to be active if `?enable=language` is in the URL, otherwise shows a ‘coming soon’ tooltip. This can also land on a branch if we don’t want that available on preview.

- language menu opens if the globe is clicked
- language menu closes if mouse is clicked anywhere outside the language selector
- language list is imported from scratch-l10n
- current locale is updated if another language is selected (i.e. the current language selected changes)

Not in this PR:
- styling of language selector
- actually changing the messages!

Also remove some obsolete code