chore: mapBySymbol support multiple token types

[shane-moore]

Changes

• it's possible for a tokenMeta object in tokens.ts to have multiple properties i.e. ibc/spl/cw20s in any combination, and each of these sub properties could be used to create a new denom/tokenMetapair in theTokenMetaUtils this.tokens. therefore, we need to extend mapBySymbolto return results for the various token types instead of returning early if it hitsif (tokenMeta.ibc && tokenMeta.ibc.baseDenom) for example, because there may also be acw20sproperty associated with it, which is the case forUSDC, which has ibcandcw20s` tokens that need to be created

Testing Completed

• hub bridge now shows USDCet. it's currently being omitted in latest published packages, since mapBySymbol is only returning the ibc property's token meta. I tested with this change, and USDCet shows again
• checked explorer assets page via yarn link, and all tokens looks good