add readonly jsdocs to open

JesmoDev · JesmoDev · commit a1cd3d0eaef1 · 2023-09-01T12:58:15.000+12:00
diff --git a/packages/uui-popover-container/lib/uui-popover-container.element.ts b/packages/uui-popover-container/lib/uui-popover-container.element.ts
@@ -33,6 +33,7 @@ export class UUIPopoverContainerElement extends LitElement {
   /**
    * Read-only attribute to check if the popover is open
    * @type {boolean}
+   * @readonly
    * @attr open
    * @default false
    */
