Update language selection menu

[chrisgarrity]

Resolves

• Resolves Replace language select with scrolling menu #2658

Proposed Changes

Initial update of language selection menu to avoid the menu within a menu. The language list is still a select, so the list of languages is styled by the browser being used. At some point we probably want to replace the select to have a consistent look for the languages across platforms.
/cc @carljbowman

Also removes the coming soon wrapper as it's no longer needed.

Test Coverage

Try it:
https://chrisgarrity.github.io/scratch-gui/issue/2658-lang-select/

Updated language integration test to use the new menu.

Browser Coverage

Check the OS/browser combinations tested (At least 2)

Mac

• Chrome
• Firefox
• Safari

Windows

• Chrome
• Firefox
• Edge

Chromebook

• Chrome

iPad

• Safari

Android Tablet

• Chrome

[fsih]

1. It looks like the arrow next to the button moved down a little (before/after):
   

2. The behavior is a bit different on Edge; the selector that appears covers the menu bar. Does that behavior seem ok?:
   

3. The selector isn't working on Firefox on Windows. When the opacity is set to 100, it looks like this (it's not covering the button):
   

4. Should the aria label change to be on the selector, since that's the relevant button to interact with now?

[chrisgarrity]

@fsih The changes should address 1, 3 & 4. The language options pop up over the menubar in all browsers, so that's expected (although the edge version is particularly ugly)

made changes

[chrisgarrity]

Interesting - I just checked the language select on my PC at home (Edge, Chrome, Firefox). Chrome and Firefox do not overlap the menu but Edge does. I was surprised because on Mac Chrome does overlap the menubar....

In any case this behavior is completely browser specific (while you can style the select tag, it's nigh on impossible to do anything to the option tag), so we'll live with the inconsistencies until we have a better component to replace the select entirely.

[fsih]

LG besides the one change with the constants

[fsih]

Looks good! I tried it out on Windows Chrome, Firefox and Edge