Button V2: Remove outline for hover, active, focus (#560)
Button V2: Remove outline for hover, active, focus (#560)

This update adds CSS to nullify the outline styles which may occur during
integration.

These outline styles are typically defined within reset/normalize
styles. Adding `outline: none` directly to the Button helps ensure that outline
removal is prioritized.
helpscout/blue,helpscout/blue,helpscout/blue