fix: normalize decimals in quoteTokenToWethValue

[jpgonzalezra]

missing decimal normalization (univ2, univ3, balancer):

• In pools that don’t contain WETH directly (like WBTC–USDC), for example previous fallback logic for univ2 did:

uint256 wethValue = quoteTokenToWethValue(token0, reserve0);
return wethValue * 2;

reserve0 comes in the token’s native decimals (WBTC has 8 decimals), but the quoteTokenToWethValue expects the amount to already be in 18 decimals (wei).

Example

• uni v2: [0x004375dff511095cc5a197a54140a24efef3a416] (https://etherscan.io/address/0x004375dff511095cc5a197a54140a24efef3a416#tokentxns)
  A WBTC balance of 74,162,977 (0.74162977 WBTC) was treated as 74 million WBTC, so the returned WETH amount was tiny (≈ 5,386,287,934 wei, i.e. 0.000000005 ETH).
• uni v3: 0x56534741cd8b152df6d48adf7ac51f75169a83b2

Fix:

1- Normalize the reserve
Convert the raw reserve (8-decimal WBTC) into an 18-decimal value by multiplying by 10^(18−8).

2- Quote with correct wei amount
Now quoteTokenToWethValue sees the true “wei amount” of token0 and returns an accurate WETH equivalent.