fix(framework) Add protection for double definition of static area (#1174)

Author: vladitasev

packages/base/src/StaticArea.js

@@ -31,7 +31,9 @@ class StaticAreaElement extends HTMLElement {
 	}
 }
 
-customElements.define("ui5-static-area", StaticAreaElement);
+if (!customElements.get("ui5-static-area")) {
+	customElements.define("ui5-static-area", StaticAreaElement);
+}
 
 export {
 	getStaticAreaInstance,

packages/base/src/StaticAreaItem.js

@@ -66,6 +66,8 @@ class StaticAreaItemElement extends HTMLElement {
 	}
 }
 
-customElements.define("ui5-static-area-item", StaticAreaItemElement);
+if (!customElements.get("ui5-static-area-item")) {
+	customElements.define("ui5-static-area-item", StaticAreaItemElement);
+}
 
 export default StaticAreaItem;