Merge pull request #766 from data-driven-forms/fix-pf3-select-prop-error

fix(pf3): fix incorrect invalid prop type in select component

Author: Hyperkid123

packages/pf3-component-mapper/src/files/select.js

@@ -20,7 +20,7 @@ const Select = (props) => {
       inputAddon={inputAddon}
     >
       <div>
-        <DataDrivenSelect classNamePrefix="ddorg__pf3-component-mapper__select" invalid={validationError(meta, validateOnMount)} {...rest} />
+        <DataDrivenSelect classNamePrefix="ddorg__pf3-component-mapper__select" invalid={!!validationError(meta, validateOnMount)} {...rest} />
       </div>
     </FormGroup>
   );