AAE-35882 Studio modelling forms required dropdown has double asterisk (#10948)

* AAE-35882 fixing the double asterix issue on require fields on preview and form-editors and workspace

* AAE-35882 altering one unit as the asterisks are now handled by mat-form-fields

lib/core/src/lib/form/components/widgets/widget.component.ts

@@ -70,11 +70,11 @@ export class WidgetComponent implements AfterViewInit {
 
     // Note for developers:
     // returns <any> object to be able binding it to the <element required="required"> attribute
-    isRequired(): any {
+    isRequired(): boolean {
         if (this.field?.required) {
             return true;
         }
-        return null;
+        return false;
     }
 
     isValid(): boolean {