feat(validatedTextField): add overrides

packages/hindawi-theme/src/elements/ValidatedTextField.js

+import { css } from 'styled-components'
+import { th } from '@pubsweet/ui-toolkit'
+
+export default {
+  MessageWrapper: css``,
+  ErrorMessage: css`
+    font-family: ${th('fontReading')};
+  `,
+}

packages/hindawi-theme/src/elements/index.js

 import Button from './Button'
 import TextField from './TextField'
+import ValidatedTextField from './ValidatedTextField'
 
-export { Button, TextField }
+export { Button, TextField, ValidatedTextField }

packages/hindawi-theme/src/index.js

@@ -2,7 +2,7 @@
 import { injectGlobal } from 'styled-components'
 
 import './fonts/index.css'
-import { Button, TextField } from './elements'
+import { Button, TextField, ValidatedTextField } from './elements'
 
 injectGlobal`
   body {
@@ -112,6 +112,7 @@ const hindawiTheme = {
     ui: {
       Button,
       TextField,
+      ValidatedTextField,
     },
   },
 }