Avoid auto-translation of API names, language keywords, and other literals

[kwalrath]

Code font is the obvious fix, but it's ugly and takes up a lot of space, so it seems a shame to use it in places where a human can tell that you're talking about something literal. Tables and API docs are especially poor places to be forced to use code font.

This is an issue for all of our sites, including (but almost certainly not limited to) dart.dev and api.dart.dev.

For more details, see #2266.

[kwalrath]

/cc @jcollins-g @tvolkert @sfshaza2 @legalcodes @johnpryan

[johnpryan]

we could try class="notranslate" according to this StackOverflow answer

[legalcodes]

I want to +1 this:

Code font is the obvious fix, but it's ugly and takes up a lot of space

The flutter/website codefont styles might be due for revisiting. I'm not convinced that our bright hyperlink-blue mixes well with the dark forest green we're using for code font on flutter.dev:

The reason I'm including this point in this issue is because if codefont were less ugly, that might enable us to use it more than we are currently, which would help with auto-translation problems that we're running into here.

[kwalrath]

I'm going to downgrade to P2 since this is going to take some time, and it mostly works now.