Erc4626 6 decimal asset support

[jimboevans]

The getVaultERC4626Info function wasn't correctly handling vaults with 6-decimal underlying assets (e.g., USDC, USDT, etc). This would result in effectively 0 fees for all associated vaults.

The problem is that 'convertToAssets' returns values in the underlying asset's decimal precision, but 'getMorphoVaultFee' assumes all rates are 18-decimal format when calculating interest.

I also addressed an issue w/ the bifrost dex and fees index.js files.

This is a follow-up to PR 4618 (closed).

NOTE

Please enable "Allow edits by maintainers" while putting up the PR.

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[llamabutler]

The bifrost-dex.ts adapter exports:

> [email protected] test
> ts-node --transpile-only cli/testAdapter.ts dexs bifrost-dex.ts

🦙 Running BIFROST-DEX.TS adapter 🦙
---------------------------------------------------
Start Date:	Fri, 07 Nov 2025 00:00:00 GMT
End Date:	Sat, 08 Nov 2025 00:00:00 GMT
---------------------------------------------------

BIFROST 👇
Backfill start time: 8/11/2024
Daily volume: 1.09 M

[llamabutler]

The bifrost-chain.ts adapter exports:

> [email protected] test
> ts-node --transpile-only cli/testAdapter.ts fees bifrost-chain.ts

🦙 Running BIFROST-CHAIN.TS adapter 🦙
---------------------------------------------------
Start Date:	Fri, 07 Nov 2025 00:00:00 GMT
End Date:	Sat, 08 Nov 2025 00:00:00 GMT
---------------------------------------------------

BIFROST 👇
Backfill start time: 8/11/2024
Daily fees: 9.00