mgr/dashboard: add rollup as optional deps

mgr/dashboard: add rollup as optional deps

- for arm64 hitting (Use `node --trace-warnings ...` to show where the warning was created)
 NX   Cannot find module @rollup/rollup-linux-arm64-gnu. npm has a bug related to optional dependencies (https://github.com/npm/cli/issues/4828). Please try `npm i` again after removing both package-lock.json and node_modules directory.
Pass --verbose to see the stacktrace.
- due tit this make check arm64 failing
- added the fix as per https://github.com/vitejs/vite/discussions/15532#discussioncomment-13369584

Signed-off-by: Afreen Misbah <afreen@ibm.com>