fix: fix Settings field form validation for certain field types (#5335)

Related to #4295

Following #5326, field types other than:
- `FieldMetadataType.Boolean`
- `FieldMetadataType.Currency`
- `FieldMetadataType.Relation`
- `FieldMetadataType.Select`
- `FieldMetadataType.MultiSelect`

Cannot be saved as they are not included in the form validation schema.
This PR makes sure they are included and can therefore be
created/edited.

packages/twenty-front/src/pages/settings/data-model/SettingsObjectNewField/SettingsObjectNewFieldStep2.tsx

@@ -211,7 +211,8 @@ export const SettingsObjectNewFieldStep2 = () => {
         const createdMetadataField = await createMetadataField({
           ...formValues,
           defaultValue:
-            formValues.type === FieldMetadataType.Currency
+            formValues.type === FieldMetadataType.Currency &&
+            'defaultValue' in formValues
               ? {
                   ...formValues.defaultValue,
                   amountMicros: null,