[4.0] Switcher is now a Custom Element

[C-Lodder]

Summary of Changes

This PR migrates the Switcher field over to a dedicated custom element which has been approved by the a11y team.

Testing Instructions

Go to the Global Configuration (or any other page that uses a switcher) and ensure it works the same as it did before.

Note, please ignore the colours. We still need to publish an update to NPM and properly pull the elements using the new package manager. Once done and we start working on the new template, we'll work the the necessary SCSS changes.

Hope @brianteeman likes the removal or the border radius :)

[ghost]

I have tested this item ✅ successfully on e455b9d

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[dgrammatiko]

@C-Lodder nice one! Please check either #19231 or #19184 for the source code folder. Basically you need to move the src to build/webcomponents/field-switcher and then run grunt createElements

[anuragteapot]

I have tested this item ✅ successfully on e455b9d

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[ghost]

Ready to Commit after two successful tests.

[brianteeman]

Why is there always a "throbber" outline on the No value?

[brianteeman]

Ignore that comment - it was a cache issue

[brianteeman]

Nope it was a brian issue and is a problem - you can probably only see it when you tab from one switcher to another

[brianteeman]

(i will post a video soon - there are a few issues)

[C-Lodder]

Brian, I purposely added the pulsating focus state, not an issue. Inspired by Google

[brianteeman]

But why is it always on the NO value

[brianteeman]

ok - i get it now. its not on the no value but its on the switch

[brianteeman]

I have tested this item ✅ successfully on e455b9d

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[dgrammatiko]

@C-Lodder the src needs to move to the right path build\...
and the compiled ones using build.js have to move to media\system\webcomponents\...

[C-Lodder]

@dgt41 yeah dont worry I haven't forgotten. compileElements grunt task didn't work so I'm waiting on your PR

[dgrammatiko]

Hold on tight 😂