fix(tangle-dapp): Fix payout modal overflowing

[AtelyPham]

Summary of changes

Provide a detailed description of proposed changes.

• Fix payout modal overflowing

Proposed area of change

Put an x in the boxes that apply.

• [ ] apps/bridge-dapp
• [ ] apps/hubble-stats
• [ ] apps/stats-dapp
• [x] apps/tangle-dapp
• [ ] apps/testnet-leaderboard
• [ ] apps/faucet
• [ ] apps/zk-explorer
• [ ] libs/webb-ui-components

Reference issue to close (if applicable)

Specify any issues that can be closed from these changes (e.g. Closes #233).

• Closes https://github.com/webb-tools/webb-dapp/issues/2386

Screen Recording

If possible provide a screen recording of proposed change.

[netlify[bot]]

✅ Deploy Preview for tangle-dapp ready!

Name	Link
🔨 Latest commit	ff89cad2fa28fc479b3c8f855615155c28579dfd
🔍 Latest deploy log	https://app.netlify.com/sites/tangle-dapp/deploys/66a427b1aef6680008dcc08b
😎 Deploy Preview	https://deploy-preview-2461--tangle-dapp.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.