Stream/ExpandedStream/Review/Search paging VMs were swallowing exceptions
inside manualPager and returning emptyList, so the pager never entered
LoadState.Error and the error-placeholder retry buttons were dead. Let
non-Auth exceptions propagate; keep the AuthException → SessionExpired
branch so 401 still hands off to Splash.
Also drop supervisorScope wrappers from CategoryStream/DevProfile/TopChart
VMs that launch no children — the surrounding try/catch already handles
everything.
71f6538d46