feat(bridge): add pyusd support through lifi

[chrstph-dvx]

Summary

Steps to test

[vercel]

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Project	Deployment	Actions	Updated (UTC)
arbitrum-portal	Ready	Preview	Mar 5, 2026 2:44am

[chrstph-dvx]

Jumper is showing PYUSD as FLX, so we need to override symbol and name:
https://jumper.exchange/fr?fromChain=1&fromToken=0x6c3ea9036406852006290770BEdFcAbA0e23A0e8&toChain=42161&toToken=0x46850aD61C2B7d64d08c9C754F45254596696984

[Copilot]

Pull request overview

This PR adds PYUSD (PayPal USD) support through LiFi bridging between Ethereum and Arbitrum One. Previously, PYUSD was a withdraw-only token on Arbitrum One, meaning users could only withdraw it but not deposit. This PR enables bidirectional bridging via LiFi.

Changes:

• Removes PYUSD from the withdraw-only token list and adds its addresses to the common address registry, enabling deposits through LiFi
• Adds PYUSD to the LiFi token registry (CUSTOM_TOKENS) and metadata overrides in both the app and arb-token-bridge-ui packages
• Refactors the normalizeTokenMetadata function in app/registry.ts to use a data-driven TOKEN_METADATA_OVERRIDES map, and fixes the USDT name field from 'USDT' to 'Tether USD'

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
packages/arb-token-bridge-ui/src/util/WithdrawOnlyUtils.ts	Removes PYUSD from the withdraw-only token list to enable deposits
packages/arb-token-bridge-ui/src/util/CommonAddressUtils.ts	Adds PYUSD addresses for Ethereum and ArbitrumOne to the common address registry
packages/arb-token-bridge-ui/src/app/api/crosschain-transfers/lifi.ts	Adds isPyUsdToken helper and PYUSD metadata override; fixes USDT name to 'Tether USD'
packages/app/src/app/api/crosschain-transfers/lifi/tokens/registry.ts	Adds PYUSD to CUSTOM_TOKENS; refactors normalizeTokenMetadata to use a data-driven TOKEN_METADATA_OVERRIDES map

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[dewanshparashar]

1. Search for PYUSD in token selector, 2. Select it. 3. Throws error.