[backport rh-test] change cloud feature flags to be loaded dynamically at runtime rather than set in build (#6257)

## Summary

Backport of #6246 to `rh-test` branch.

This PR cherry-picks commit d7a58a7a9b to
the `rh-test` branch with merge conflicts resolved.

### Conflicts Resolved

**GraphCanvas.vue:**
- Accepted incoming template structure changes (removed betaMenuEnabled
check, added workflow tabs)
- Added missing imports: TopbarBadges, WorkflowTabs, isNativeWindow
- Added showUI computed property

**cloudBadge.ts:**
- Deleted file (replaced by cloudBadges.ts plural)

**telemetry/types.ts:**
- Merged interface methods from both branches
- Accepted incoming event constant changes (app: prefix)

Original PR: #6246

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6257-backport-rh-test-change-cloud-feature-flags-to-be-loaded-dynamically-at-runtime-rather--2966d73d365081a59daeeb6dfbbf2af5)
by [Unito](https://www.unito.io)

vitest.setup.ts

@@ -1,6 +1,17 @@
 import { vi } from 'vitest'
 import 'vue'
 
+// Augment Window interface for tests
+declare global {
+  interface Window {
+    __CONFIG__: {
+      mixpanel_token?: string
+      subscription_required?: boolean
+      server_health_alert?: string
+    }
+  }
+}
+
 // Define global variables for tests
 // @ts-expect-error - Global variables are defined in global.d.ts
 globalThis.__COMFYUI_FRONTEND_VERSION__ = '1.24.0'
@@ -15,8 +26,11 @@ globalThis.__ALGOLIA_API_KEY__ = ''
 // @ts-expect-error - Global variables are defined in global.d.ts
 globalThis.__USE_PROD_CONFIG__ = false
 globalThis.__DISTRIBUTION__ = 'localhost'
-globalThis.__BUILD_FLAGS__ = {
-  REQUIRE_SUBSCRIPTION: true
+
+// Define runtime config for tests
+window.__CONFIG__ = {
+  subscription_required: true,
+  mixpanel_token: 'test-token'
 }
 
 // Mock Worker for extendable-media-recorder