fix(material/select): ensure proper highlighting on selection

Author: adolgachev

src/material/core/option/option.scss

@@ -43,7 +43,7 @@ $_side-padding: 16px;
   &.mdc-list-item--selected:not(.mdc-list-item--disabled) {
     // We don't change the background & text color in multiple mode since
     // it has the checkbox to show the selected state.
-    &:not(.mat-mdc-option-multiple) {
+    &:not(.mat-mdc-option-active,.mat-mdc-option-multiple,:focus,:hover) {
       background-color: token-utils.slot(option-selected-state-layer-color, $fallbacks);
       .mdc-list-item__primary-text {
         color: token-utils.slot(option-selected-state-label-text-color, $fallbacks);