feat(): enable custom domain usage (#9911)

# Content
- Introduce the `workspaceUrls` property. It contains two
sub-properties: `customUrl, subdomainUrl`. These endpoints are used to
access the workspace. Even if the `workspaceUrls` is invalid for
multiple reasons, the `subdomainUrl` remains valid.
- Introduce `ResolveField` workspaceEndpoints to avoid unnecessary URL
computation on the frontend part.
- Add a `forceSubdomainUrl` to avoid custom URL using a query parameter

packages/twenty-server/src/database/typeorm-seeds/core/feature-flags.ts

@@ -48,7 +48,7 @@ export const seedFeatureFlags = async (
       {
         key: FeatureFlagKey.IsCustomDomainEnabled,
         workspaceId: workspaceId,
-        value: true,
+        value: false,
       },
       {
         key: FeatureFlagKey.IsBillingPlansEnabled,