refactor(picker-column): add presentation role

Author: thetaPC

core/src/components/picker-column/picker-column.tsx

@@ -682,6 +682,7 @@ export class PickerColumn implements ComponentInterface {
         {this.renderAssistiveFocusable()}
         <slot name="prefix"></slot>
         <div
+          role="presentation"
           class="picker-opts"
           ref={(el) => {
             this.scrollEl = el;