chore: pitr entitlement check in db backups (#42901)

Adds the PITR entitlement check to the `Database Backup` -> `PITR` page.

apps/studio/pages/project/[ref]/database/backups/pitr.tsx

@@ -29,6 +29,7 @@ import {
 } from 'ui-patterns/PageHeader'
 import { PageSection, PageSectionContent } from 'ui-patterns/PageSection'
 import { GenericSkeletonLoader } from 'ui-patterns/ShimmeringLoader'
+import { useCheckEntitlements } from '@/hooks/misc/useCheckEntitlements'
 
 const DatabasePhysicalBackups: NextPageWithLayout = () => {
   return (
@@ -65,18 +66,18 @@ DatabasePhysicalBackups.getLayout = (page) => (
 const PITR = () => {
   const { ref: projectRef } = useParams()
   const { data: project } = useSelectedProjectQuery()
-  const { data: organization } = useSelectedOrganizationQuery()
+  const { hasAccess: hasAccessToPitr, isLoading: isLoadingEntitlements } =
+    useCheckEntitlements('pitr.available_variants')
   const isOrioleDbInAws = useIsOrioleDbInAws()
   const {
     data: backups,
     error,
-    isPending: isLoading,
+    isPending: isLoadingBackups,
     isError,
     isSuccess,
   } = useBackupsQuery({ projectRef })
 
-  const plan = organization?.plan?.id
-  const isFreePlan = plan === 'free'
+  const isLoading = isLoadingBackups || isLoadingEntitlements
   const isEnabled = backups?.pitr_enabled
   const isActiveHealthy = project?.status === PROJECT_STATUS.ACTIVE_HEALTHY
 
@@ -109,12 +110,12 @@ const PITR = () => {
         <>
           {!isEnabled ? (
             <UpgradeToPro
-              addon={isFreePlan ? undefined : 'pitr'}
+              addon={hasAccessToPitr ? 'pitr' : undefined}
               source="pitr"
               featureProposition="enable Point in Time Recovery"
               primaryText="Point in Time Recovery is a Pro Plan add-on"
               secondaryText={
-                isFreePlan
+                !hasAccessToPitr
                   ? 'Roll back your database to a specific second. Starts at $100/month. Pro Plan already includes daily backups at no extra cost.'
                   : 'Please enable the add-on to enable point in time recovery for your project.'
               }