feat(statics): onboard pol and baseeth assets

[rithwik-bitgo]

TICKET: CECHO-1630

Adds polygon:seag (Seltene Erden AG) token on Polygon mainnet with OFC support
Adds tbaseeth:tnmr (AlpacaNMR) and tbaseeth:tabeq (AlpacaABEQ) on Base testnet with OFC support

[linear-code]

CECHO-1630

[Copilot]

Pull request overview

This PR updates the @bitgo/statics asset registry to onboard new token assets and their OFC (off-chain) counterparts, extending the coin/token catalogs used across the SDK for asset lookup and configuration.

Changes:

• Added Polygon mainnet ERC20 token polygon:seag (and its OFC variant ofcpolygon:seag) with new UnderlyingAsset entry.
• Added Base testnet ERC20 tokens tbaseeth:tnmr and tbaseeth:tabeq plus their OFC variants (ofctbaseeth:tnmr, ofctbaseeth:tabeq).
• Extended UnderlyingAsset enum to include the newly onboarded assets.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
modules/statics/src/coins/polygonTokens.ts	Adds polygon:seag token definition to Polygon token list.
modules/statics/src/coins/ofcCoins.ts	Adds OFC Polygon token entry for ofcpolygon:seag.
modules/statics/src/coins/ofcErc20Coins.ts	Adds OFC Base testnet ERC20 entries for tnmr and tabeq.
modules/statics/src/base.ts	Adds new UnderlyingAsset enum values for Polygon/Base testnet assets.
modules/statics/src/allCoinsAndTokens.ts	Adds Base testnet ERC20 token definitions for tbaseeth:tnmr and tbaseeth:tabeq.

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