[backport cloud/1.37] feat: add isCloud guard to team workspaces feature flag (#8229)

## Summary
- Backport of #8201 to cloud/1.37
- Adds isCloud guard to team workspaces feature flag

## Test plan
- [ ] Verify team workspaces feature flag only activates on cloud
environments

🤖 Generated with [Claude Code](https://claude.com/claude-code)

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-8229-backport-cloud-1-37-feat-add-isCloud-guard-to-team-workspaces-feature-flag-2f06d73d365081b18655fb82da53ff43)
by [Unito](https://www.unito.io)

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

src/composables/useFeatureFlags.ts

@@ -1,5 +1,6 @@
 import { computed, reactive, readonly } from 'vue'
 
+import { isCloud } from '@/platform/distribution/types'
 import { remoteConfig } from '@/platform/remoteConfig/remoteConfig'
 import { api } from '@/scripts/api'
 
@@ -95,6 +96,8 @@ export function useFeatureFlags() {
       )
     },
     get teamWorkspacesEnabled() {
+      if (!isCloud) return false
+
       return (
         remoteConfig.value.team_workspaces_enabled ??
         api.getServerFeature(ServerFeatureFlag.TEAM_WORKSPACES_ENABLED, false)