fix(picker-column-option): changed structure in order to remove tabindex="-1"

This is needed in order to prevent A11Y issues, in order to prevent to be possible to navigate through each option item through tab navigation, structure must change into this.

core/src/components/picker-column-option/picker-column-option.scss

@@ -3,7 +3,7 @@
 // Picker Column
 // --------------------------------------------------
 
-button {
+.picker-column-option-button {
   @include padding(0);
   @include margin(0);
 
@@ -40,6 +40,6 @@ button {
   opacity: 0.4;
 }
 
-:host(.option-disabled) button {
+:host(.option-disabled) .picker-column-option-button {
   cursor: default;
 }

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

@@ -129,9 +129,9 @@ export class PickerColumnOption implements ComponentInterface {
           ['option-disabled']: disabled,
         })}
       >
-        <button tabindex="-1" aria-label={ariaLabel} disabled={disabled} onClick={() => this.onClick()}>
+        <div class={"picker-column-option-button"} role="button" aria-label={ariaLabel} onClick={() => this.onClick()}>
           <slot></slot>
-        </button>
+        </div>
       </Host>
     );
   }