[No QA] Show skeleton in BaseSidebarScreen to avoid mounting heavy SidebarLinks during initial load#84153

JS00001 merged 7 commits intoExpensify:mainExpensify/App:mainfrom

callstack-internal:perf/early-return-skeleton-sidebarcallstack-internal/Expensify-App:perf/early-return-skeleton-sidebarCopy head branch name to clipboard