fix(dashboard): make JSON metadata editor resizable

Author: Mayankaggarwal8055

superset-frontend/src/dashboard/components/PropertiesModal/index.tsx

@@ -626,7 +626,7 @@ const PropertiesModal = ({
       width={900}
       title={t('Dashboard properties')}
       isEditMode
-      resizable
+      resizable 
       saveDisabled={dashboardInfo?.isManagedExternally || hasErrors}
       saveLoading={isApplying}
       contentLoading={isLoading}