style: Pass at propagating (and enhancing) Button component throughout Superset (#10649)

* getting rid of weird focus/active outline ring

* Buttons... buttons _everywhere_

* linting

* Nixing views/CRUD/dataset/Button component

* fixing 2 typing errors

* fixing more TS errors

* prefer src path for include

* one more real button, one less CSS class

* one more "button" to "Button"

* Published Status is now a proper clickable Label

* nixing the CRUD button again

* touching up stories, with SupersetButton story

* SIP-34 button colors

* adding polished package to mix colors

* updating button colors to match Superset theme

* abstracting away from bootstrap-specific props (might pivot libraries soon!)

* more abstraction from bsStyle/bsSize props

* exchanging styles for a prop

* linting

* restoring feature flag to stock

* using src alias

* last <button> replacement

* this classname would never be applied

* more linting action

* fixing unsupported bsSize 'medium', and cta typing error

* more cta action

* unnecessary styles

* errant bsSize prop

* cleanup

* tweaks to make new New button work

* Linting

* fixing a couple tests

* fixing theme based test failure

* margin tweak for NEW button

* another fixed test

* another fixed test

* fixing two more tests

* fixing last broken tests.

* always be linting

* Adding tertiary/dashed buttons

* cleaning up QueryAndSave buttons

* fixing "link" button styles

* fixing/updating link button styles

* cta buttons on Modal component

* linting.

* exporting button story knobs, making ALL knobs safe for export.

* capitalizing a file... no big whoop

* Basic button tests

* renaming button - temporarily

* renaming file to fix capitalization issue

* passing theme through to a difficult popover.

* fixin' a newly busted unit test

* lint fixin'

* oops, shouldn't have changed this prop!

* adding a dive() to themedShallow, and fixing a cypress/jest test

* addressing lint stuff

* touching up stories, with SupersetButton story

* SIP-34 button colors

* updating button colors to match Superset theme

* abstracting away from bootstrap-specific props (might pivot libraries soon!)

* linting

* restoring feature flag to stock

* cleanup

* Linting

* renaming button - temporarily

* renaming file to fix capitalization issue

* oops, shouldn't have changed this prop!

* adding a dive() to themedShallow, and fixing a cypress/jest test

* addressing lint stuff

* nixing new modal button

* Fixing another popover/button issue that should break cypress

* lint :sparkles:

* passing classNames through to new button (should fix some tests)

* cleaning unused classes, making cypress tests use data attrs

* fixin' the test

* fixing another class-based test with data-test attr

* no longer passing theme as prop to buttons in popovers... themeprovider is better

* outline/border tweaks!