[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)

src/platform/cloud/subscription/composables/useSubscription.ts

@@ -27,7 +27,7 @@ interface CloudSubscriptionStatusResponse {
 const subscriptionStatus = ref<CloudSubscriptionStatusResponse | null>(null)
 
 const isActiveSubscription = computed(() => {
-  if (!isCloud || !__BUILD_FLAGS__.REQUIRE_SUBSCRIPTION) return true
+  if (!isCloud || !window.__CONFIG__?.subscription_required) return true
 
   return subscriptionStatus.value?.is_active ?? false
 })