Resolve "MolArt freezes after use"

Closes #313 (closed)

src/components/FunctionalArea/Modal/MolArtModal/MolArtModal.component.tsx

@@ -21,6 +21,7 @@ export const MolArtModal: React.FC = () => {
       molart = new MolArt({
         uniprotId: uniprot,
         containerId,
+        customDataSources: [],
       });
     } catch (e) {
       // eslint-disable-next-line no-console