[web] Add ai-limit-upgrade-copy split test on the interstitial (#34525)

* [web] Add ai-limit-upgrade-copy split test on the interstitial

* Add french translations

* Exclude trials from ai-limit-copy

* Add `workbench` and `assistant` to the paywall-types having the updated copy

GitOrigin-RevId: 8da856c17718280c74919a38ec78345d0bd5f781

services/web/locales/en.json

@@ -946,6 +946,7 @@
   "footer_about_us": "About us",
   "footer_contact_us": "Contact us",
   "footnotes": "Footnotes",
+  "for_ai_use_without_counting_the_prompts": "For AI use without counting the prompts.",
   "for_business": "For business",
   "for_government": "For government",
   "for_groups_and_organizations": "For groups and organizations",
@@ -2945,6 +2946,7 @@
   "upgrade": "Upgrade",
   "upgrade_cc_btn": "Upgrade now, pay after 7 days",
   "upgrade_for_more_compile_time": "Upgrade to get more compile time",
+  "upgrade_for_our_highest_ai_allowance": "Upgrade for our highest AI allowance",
   "upgrade_for_unlimited_access_to_ai": "Upgrade to keep using AI features, or wait __time__ for your limit to reset.",
   "upgrade_my_plan": "Upgrade my plan",
   "upgrade_now": "Upgrade now",

services/web/locales/fr.json

@@ -453,6 +453,7 @@
   "following_paths_conflict": "Les fichiers et dossiers suivants sont en conflit avec le même chemin",
   "footer_about_us": "À propos de nous",
   "footer_contact_us": "Nous contacter",
+  "for_ai_use_without_counting_the_prompts": "Pour utiliser l’IA sans compter.",
   "for_business": "Pour les entreprises",
   "for_publishers": "Pour les éditeurs",
   "for_students": "Pour les étudiants",
@@ -1132,6 +1133,7 @@
   "updating_site": "Mise à jour du site",
   "upgrade": "Mettre à niveau",
   "upgrade_cc_btn": "Mettez à niveau maintenant, payez dans 7 jours",
+  "upgrade_for_our_highest_ai_allowance": "Passez à notre quota d’IA le plus élevé",
   "upgrade_now": "Mettre à niveau maintenant",
   "upgrade_to_get_feature": "Mettre à niveau pour profiter de __feature__, plus :",
   "upload": "Importer",