perf: Add credentialId index to selectedCalendar (#20979)

packages/prisma/migrations/20250425220800_add_selected_calendar_credential_id_index/migration.sql

@@ -0,0 +1,2 @@
+-- CreateIndex
+CREATE INDEX "SelectedCalendar_credentialId_idx" ON "SelectedCalendar"("credentialId");

packages/prisma/schema.prisma

@@ -790,6 +790,7 @@ model SelectedCalendar {
   @@index([integration])
   @@index([externalId])
   @@index([eventTypeId])
+  @@index([credentialId])
 }
 
 enum EventTypeCustomInputType {