[backport rh-test] load template workflow via URL query param (#6553)

Backport of #6546 to `rh-test`

Automatically created by backport workflow.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6553-backport-rh-test-load-template-workflow-via-URL-query-param-2a06d73d36508134b560dadeb00a4510)
by [Unito](https://www.unito.io)

Co-authored-by: Christian Byrne <cbyrne@comfy.org>
Co-authored-by: Christian Byrne <c.byrne@comfy.org>

src/views/GraphView.vue

@@ -51,6 +51,7 @@ import { useSettingStore } from '@/platform/settings/settingStore'
 import { useTelemetry } from '@/platform/telemetry'
 import { useFrontendVersionMismatchWarning } from '@/platform/updates/common/useFrontendVersionMismatchWarning'
 import { useVersionCompatibilityStore } from '@/platform/updates/common/versionCompatibilityStore'
+import { useTemplateUrlLoader } from '@/platform/workflow/templates/composables/useTemplateUrlLoader'
 import type { StatusWsMessageStatus } from '@/schemas/apiSchema'
 import { api } from '@/scripts/api'
 import { app } from '@/scripts/app'
@@ -77,6 +78,9 @@ setupAutoQueueHandler()
 useProgressFavicon()
 useBrowserTabTitle()
 
+// Template URL loading
+const { loadTemplateFromUrl } = useTemplateUrlLoader()
+
 const { t } = useI18n()
 const toast = useToast()
 const settingStore = useSettingStore()
@@ -343,6 +347,9 @@ const onGraphReady = () => {
       tabCountChannel.postMessage({ type: 'heartbeat', tabId: currentTabId })
     }
 
+    // Load template from URL if present
+    void loadTemplateFromUrl()
+
     // Setting values now available after comfyApp.setup.
     // Load keybindings.
     wrapWithErrorHandling(useKeybindingService().registerUserKeybindings)()