feat(csat): Add WhatsApp utility template analyzer with rewrite guidance (#13575)

CSAT templates for WhatsApp are submitted as Utility, but Meta may
reclassify them as Marketing based on content, which can significantly
increase messaging costs.
This PR introduces a Captain-powered CSAT template analyzer for
WhatsApp/Twilio WhatsApp that predicts utility fit, explains likely
risks, and suggests safer rewrites before submission. The flow is manual
(button-triggered), Captain-gated, and applies rewrites only on explicit
user action. It also updates UX copy to clearly set expectations: the
system submits as Utility, Meta makes the final categorization decision.

Fixes
https://linear.app/chatwoot/issue/CW-6424/ai-powered-whatsapp-template-classifier-for-csat-submissions


https://github.com/user-attachments/assets/8fd1d6db-2f91-447c-9771-3de271b16fd9

app/javascript/dashboard/store/modules/inboxes.js

@@ -360,6 +360,13 @@ export const actions = {
     const response = await InboxesAPI.getCSATTemplateStatus(inboxId);
     return response.data;
   },
+  analyzeCSATTemplateUtility: async (_, { inboxId, template }) => {
+    const response = await InboxesAPI.analyzeCSATTemplateUtility(
+      inboxId,
+      template
+    );
+    return response.data;
+  },
 };
 
 export const mutations = {