- this requires passing the styles obj to the `euiSelectableTemplateSitewideFormatOptions` function, which isn't actually a react component :|

+ remove unnecessary `!important`

+ fix import order/unnecessary extra dir

- Ignore `$euiSelectableTemplateFocusBackgroundLight/Dark` - we can't meaningfully use this background in our chroma.js calculations as chroma can't calculate contrast w/ alpha transparency. Using the default body background color should suffice / generates the same output colors

- again, these files aren't React components so we have to continuously pass the memoized style obj around, and use `RenderWithEuiStylesMemoizer` :T

- [syntax] convert `renderOptionMeta` to obj arg notation for easier DX and fallbacks

- render functions don't snapshot well, so we should just render the DOM

+ update the `searchValue` test to be marginally more useful/pointed

- not a lot we can for `__listItem`, but we can at least dogfood `euiSelectableTemplateSitewideRenderOptions` children

- doesn't appear to be needed anymore, not totally sure why tho

+ add a vrt-only one to allow for snapshotting options