some fixes

Author: tjk

packages/connect-react/src/components/ErrorBoundary.tsx

@@ -8,10 +8,6 @@ type Props = {
 export class ErrorBoundary extends Component<Props> {
   state = {err: undefined}
 
-  constructor(props: Props) {
-    super(props)
-  }
-
   static getDerivedStateFromError(err: any) {
     return {err}
   }

packages/connect-react/src/hooks/form-context.tsx

@@ -194,7 +194,7 @@ export const FormContextProvider: React.FC<FormContextProviderProps> = ({ childr
         }
       } else {
         if (prop.type === "integer" && typeof value !== "number") {
-          newConfiguredProps[prop.name] = undefined // XXX check this deletes
+          delete newConfiguredProps[prop.name]
         } else {
           newConfiguredProps[prop.name] = value
         }