feat: integrate Typeform survey into feedback button (#10890)

## Summary

Replace Zendesk feedback URLs with Typeform survey (`q7azbWPi`) in the
action bar feedback button and Help Center menu for Cloud/Nightly
distributions.

## Changes

- **What**: 
- `cloudFeedbackTopbarButton.ts`: Replace `buildFeedbackUrl()` (Zendesk)
with direct Typeform survey URL. Remove unused Zendesk import.
- `HelpCenterMenuContent.vue`: Feedback menu item now opens Typeform URL
for Cloud/Nightly builds; falls back to `Comfy.ContactSupport` (Zendesk)
for other distributions. Added external link icon for Cloud/Nightly.
- Help menu item and `Comfy.ContactSupport` command unchanged — support
flows still route to Zendesk.

## Review Focus

- Gating logic: `isCloud || isNightly` correctly limits Typeform
redirect to intended distributions
- Help item intentionally unchanged (support ≠ feedback)

Ticket: COM-17992

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-10890-feat-integrate-Typeform-survey-into-feedback-button-33a6d73d36508185abbfe57e7a36b5f7)
by [Unito](https://www.unito.io)

src/components/helpcenter/HelpCenterMenuContent.vue

@@ -159,7 +159,7 @@ import { useI18n } from 'vue-i18n'
 
 import PuzzleIcon from '@/components/icons/PuzzleIcon.vue'
 import { useExternalLink } from '@/composables/useExternalLink'
-import { isCloud, isDesktop } from '@/platform/distribution/types'
+import { isCloud, isDesktop, isNightly } from '@/platform/distribution/types'
 import { useSettingStore } from '@/platform/settings/settingStore'
 import { useTelemetry } from '@/platform/telemetry'
 import type { ReleaseNote } from '@/platform/updates/common/releaseService'
@@ -299,9 +299,18 @@ const menuItems = computed<MenuItem[]>(() => {
       type: 'item',
       icon: 'icon-[lucide--clipboard-pen]',
       label: t('helpCenter.feedback'),
+      showExternalIcon: isCloud || isNightly,
       action: () => {
-        trackResourceClick('help_feedback', false)
-        void commandStore.execute('Comfy.ContactSupport')
+        trackResourceClick('help_feedback', isCloud || isNightly)
+        if (isCloud || isNightly) {
+          window.open(
+            'https://form.typeform.com/to/q7azbWPi',
+            '_blank',
+            'noopener,noreferrer'
+          )
+        } else {
+          void commandStore.execute('Comfy.ContactSupport')
+        }
         emit('close')
       }
     },