fix: mf-6820 hide robinhood chain from red packet

[swkatmask]

Summary

• MF-6820: the create-red-packet token picker listed the Robinhood chain (4663), but red packets there cannot be claimed yet (the backend does not support claiming on Robinhood), so creating one is blocked until that lands.
• Hide the Robinhood chain from the red packet token pickers instead:
  • constants.ts: new RED_PACKET_UNSUPPORTED_CHAINS = [ChainId.Robinhood]
  • new useRedPacketSupportedChains() hook: useNetworks minus the unsupported chains
  • pass chains to SelectFungibleTokenModal in the create form (CreateTokenRedPacket.tsx) and the claim-conditions token picker (ConditionSettings.tsx)

Follow-up: once claiming is supported on Robinhood, remove ChainId.Robinhood from RED_PACKET_UNSUPPORTED_CHAINS and register the V4 contract (see #12473, currently draft, which does exactly that).

Verification

• pnpm build + pnpm lint pass.
• Runtime (dev extension on x.com): opened the Lucky Drop token picker — the network rail no longer shows the Robinhood icon (19 → 18 entries), and no Robinhood feather logo is present; all other chains unchanged.

Notes

• If the wallet is already switched to Robinhood globally, the dialog still opens on it (the picker keeps showing the current chain's native token) — users just can no longer switch to Robinhood from the red packet pickers. Auto-forcing a chain switch was avoided since it would prompt an unwanted wallet_switchEthereumChain in the connected wallet.

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1 Skipped Deployment

Project	Deployment	Actions	Updated
book	Skipped		Sep 9, 2026 12:51pm UTC