[Web] Enable Quota System for AI Features (#31544)

* feat: migrate from aiErrorAssist naming for disabling AI features to aiFeatures.enabled to avoid confusion

feat: keep aiErrorAssistant as setting on user object until migration is run

* feat: migrate writefull.enabled unset to instead use promotionSet false

* feat: updating to use quota based system for AI usage

* feat: hide relevant sections of quota system behind split test

* feat: ship onAiFreeTrial instead of free quota amount to project meta

* fix: renaming splitTestEnabledForUser to featureFlagEnabledForUser

* fix: v1_personal should have free trial amount of ai quota

* fix: onAiFreeTrial in projectController should account for anonymous users with no features

* feat: fixing marketing exports for ai quotas

* feat: update features epoch

* feat: move to quota tiers, and map tier to numeric allowance within rateLimiters

GitOrigin-RevId: 17763447965aae5777053b783d2601517bfe6b12

services/web/frontend/js/shared/context/user-features-context.tsx

@@ -11,9 +11,12 @@ import { useUserContext } from './user-context'
 import { useReceiveUser } from '../hooks/user-channel/use-receive-user'
 import { getJSON } from '@/infrastructure/fetch-json'
 import { useEditorContext } from './editor-context'
+import getMeta from '@/utils/meta'
 
 export const UserFeaturesContext = createContext<User['features']>(undefined)
 
+const onAiFreeTrial = getMeta('ol-onAiFreeTrial')
+
 export const UserFeaturesProvider: FC<React.PropsWithChildren> = ({
   children,
 }) => {
@@ -31,7 +34,12 @@ export const UserFeaturesProvider: FC<React.PropsWithChildren> = ({
 
   useEffect(() => {
     const listener = async ({ isPremium }: { isPremium: boolean }) => {
-      if (features?.aiErrorAssistant === isPremium) {
+      // todo: quota clean-up: remove once we are transitioned off aiErrorAssistant naming
+      const hasPremiumQuota = !onAiFreeTrial
+      const alreadyPremium =
+        features?.aiErrorAssistant === isPremium ||
+        hasPremiumQuota === isPremium
+      if (alreadyPremium) {
         // the user is premium on writefull and has the AI assist, no need to refresh the features
         return
       }