Fix: Remove 'Soon' integrations from Settings when disabled (#7259)

## Description
This PR addresses issue #7110, where Airtable, Stripe and PostgreSQL
integrations were showing as "Soon" under Settings > Integrations.

## Changes

- Update `getSettingsIntegrationAll` so that when these integrations are
disabled (via feature flags), they are removed from the list instead of
showing as "Soon".
<img width="569" alt="Screenshot 2024-09-25 at 11 21 07 a m"
src="https://github.com/user-attachments/assets/dae34e1f-b231-4e0c-bbd0-7d43a6a2f94a">

- Tweaked `useSettingsIntegrationCategories` to only show the "All"
category if there's at least one integration enabled.
<img width="582" alt="Screenshot 2024-09-25 at 11 21 15 a m"
src="https://github.com/user-attachments/assets/57b87b18-8018-49e5-a507-527f2e6e701b">

## Notes
This is my first contribution to the project, so I'm open to feedback! 😄
Let me know if there's anything I should tweak or improve.

packages/twenty-front/src/modules/settings/integrations/hooks/useSettingsIntegrationCategories.ts

@@ -29,15 +29,17 @@ export const useSettingsIntegrationCategories =
       ({ name }) => name === 'stripe',
     )?.isActive;
 
+    const allIntegrations = getSettingsIntegrationAll({
+      isAirtableIntegrationEnabled,
+      isAirtableIntegrationActive,
+      isPostgresqlIntegrationEnabled,
+      isPostgresqlIntegrationActive,
+      isStripeIntegrationEnabled,
+      isStripeIntegrationActive,
+    });
+
     return [
-      getSettingsIntegrationAll({
-        isAirtableIntegrationEnabled,
-        isAirtableIntegrationActive,
-        isPostgresqlIntegrationEnabled,
-        isPostgresqlIntegrationActive,
-        isStripeIntegrationEnabled,
-        isStripeIntegrationActive,
-      }),
+      ...(allIntegrations.integrations.length > 0 ? [allIntegrations] : []),
       SETTINGS_INTEGRATION_ZAPIER_CATEGORY,
       SETTINGS_INTEGRATION_WINDMILL_CATEGORY,
       SETTINGS_INTEGRATION_REQUEST_CATEGORY,