Merge pull request #3620 from SherpasGroup/fix-null-value-rendering

Render empty string instead of null and undefined values

search-parts/src/components/DetailsListComponent.tsx

@@ -358,7 +358,7 @@ export class DetailsListComponent extends React.Component<IDetailsListComponentP
                                 value = ObjectHelper.byPath(item, column.value);
                             }
 
-                            const tempColumnValueAsHtml = new DOMParser().parseFromString("<span>" + value as string + "</span>", "text/html");
+                            const tempColumnValueAsHtml = new DOMParser().parseFromString(`<span>${value ?? ""}</span>`, "text/html");
 
                             this.props.templateService.replaceDisambiguatedMgtElementNames(tempColumnValueAsHtml);