…xt-color-hover" token to allow both a default and overridable hover color.

…ender this unnecessary and we don't want to ship a token we'll have to immediately deprecate

…so that one color token controls both the unfocused and focused states

…irectly on a calcite-tile element selector in CSS

… Restoring selection-appearance border selected styles with box-shadow rules.

…internal-tile-border-color and using brand token for hover, focus states on borders

…calcite-tile-heading-text-color-hover

…way of setting the color of the presentation calcite-icon using a direct color property, and adding additional --calcite-tile-href-icon-color-hover token that defaults to the link color