Fix seeds (#7543)

- Fixing seeds after introducing the requirement for non-nullable fields
to have a default value (https://github.com/twentyhq/twenty/pull/7522).
- Empty string needs to be considered a valid default value

packages/twenty-server/src/database/typeorm-seeds/metadata/fieldsMetadata.ts

@@ -15,6 +15,7 @@ export const getDevSeedCompanyCustomFields = (
       icon: 'IconAdCircle',
       isActive: true,
       isNullable: false,
+      defaultValue: "''",
       objectMetadataId,
     },
     {
@@ -99,6 +100,13 @@ export const getDevSeedPeopleCustomFields = (
       icon: 'IconBrandWhatsapp',
       isActive: true,
       isNullable: false,
+      defaultValue: [
+        {
+          primaryPhoneNumber: '',
+          primaryPhoneCountryCode: '',
+          additionalPhones: {},
+        },
+      ],
       objectMetadataId,
     },
     {