fix(menubar): remove incorrect aria-activedescendant

- `aria-activedescendant` should identify a visually focused element when the real focus remains on this element.
  In the current implementation it identified selected element (even when the menu is closed), not the focused.
- `aria-activedescendant` is not needed because NcAction has actual focus anyway.
  In case it will be actually needed, it should be implemented in the `NcActions`

Signed-off-by: Grigorii K. Shartsev <me@shgk.me>

src/components/Menu/ActionList.vue

@@ -27,7 +27,6 @@
 		:container="menuIDSelector"
 		:aria-label="labelWithSelected"
 		:type="state.active ? 'primary': 'tertiary'"
-		:aria-activedescendant="currentChild ? `${$menuID}-child-${currentChild.key}` : null"
 		:force-menu="true"
 		:name="labelWithSelected"
 		:data-text-action-entry="actionEntry.key"
@@ -37,7 +36,6 @@
 			<component :is="icon" :key="iconKey" />
 		</template>
 		<ActionSingle v-for="child in children"
-			:id="`${$menuID}-child-${child.key}`"
 			:key="`child-${child.key}`"
 			:active="currentChild?.key === child.key"
 			is-item