Cloud/tracking v2 (#6400)

## Summary

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## Changes

- **What**: <!-- Core functionality added/modified -->
- **Breaking**: <!-- Any breaking changes (if none, remove this line)
-->
- **Dependencies**: <!-- New dependencies (if none, remove this line)
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## Review Focus

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<!-- If this PR fixes an issue, uncomment and update the line below -->
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## Screenshots (if applicable)

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┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6400-Cloud-tracking-v2-29c6d73d365081a1ae32e9337f510a9e)
by [Unito](https://www.unito.io)

---------

Co-authored-by: Arjan Singh <arjan@comfy.org>

src/platform/cloud/subscription/components/SubscribeButton.vue

@@ -37,6 +37,7 @@ const emit = defineEmits<{
 }>()
 
 const { subscribe, isActiveSubscription, fetchStatus } = useSubscription()
+const telemetry = useTelemetry()
 
 const isLoading = ref(false)
 const isPolling = ref(false)
@@ -62,6 +63,7 @@ const startPollingSubscriptionStatus = () => {
 
       if (isActiveSubscription.value) {
         stopPolling()
+        telemetry?.trackMonthlySubscriptionSucceeded()
         emit('subscribed')
       }
     } catch (error) {