message: fix(combobox): Override z-index only when focus state
  Fixes:
  [category:Components]
diff: @@ -414,7 +414,7 @@ const Combobox = ({
  };
  const renderChildren = (inputElement: React.ReactElement<TextInputProps>): React.ReactNode => {
  - let cssOverride: CSSObject = {zIndex: 2};
  + let cssOverride: CSSObject = {':focus': {zIndex: 2}};
  if (showClearButton) {
  const paddingDirection = isRTL ? 'paddingLeft' : 'paddingRight';
  cssOverride = {
  