fix(ui): falls back custom fields as undefined instead of null

packages/ui/src/utilities/buildComponentMap/mapFields.tsx

@@ -659,7 +659,7 @@ export const mapFields = (args: {
           Cell,
           CustomField: CustomFieldComponent ? (
             <CustomFieldComponent {...fieldComponentProps} />
-          ) : null,
+          ) : undefined,
           Heading,
           fieldComponentProps,
           fieldIsPresentational,

tsconfig.json

@@ -94,7 +94,7 @@
         "./packages/graphql/src"
       ],
       "@payload-config": [
-        "./test/_community/config.ts"
+        "./test/auth/config.ts"
       ]
     }
   },