Merge pull request #29569 from overleaf/oa-promocode-warnings

[web] Promocode warnings

GitOrigin-RevId: 020380e31c26d13e9b74b0f5df588942d302f8db

services/web/types/subscription/subscription-creation-preview.ts

@@ -11,4 +11,5 @@ export type SubscriptionCreationPreview = {
   lookupKey: string
   trialLength: number | null
   plan: Plan
+  warnings?: Record<string, string>
 }