Invalid Price Oracles and Incorrect priceInUSD on Arbitrum Sepolia with UiPoolDataProvider

[Sonubhagatpur]

When using UiPoolDataProvider.getReservesHumanized from @aave/contract-helpers@1.35.0 on Arbitrum Sepolia, the priceInUSD for assets (e.g., WETH) is incorrect (e.g., 1.539e+35), and the priceOracle addresses are invalid (0x000...000 for WETH, 0x000...11fdFC48E9C for USDC). This issue does not occur on Arbitrum mainnet, where prices are accurate. The problem appears to stem from misconfigured price oracles in the Aave V3 testnet deployment or incorrect scaling in formatReserves from @aave/math-utils@1.35.0, possibly due to outdated addresses in @bgd-labs/aave-address-book@4.25.1.

This affects applications requiring reliable testnet price data, critical for large-scale DeFi projects. A proper testnet configuration with valid oracles is needed to ensure consistent behavior across networks.

[sqhell]

Hey there, I have created 2 PRs to fix this. I'm not sure if aave-address-book needs updated also. Is there any new documentation on how to push changes to it or generate the right addresses?

Related PRs:
aave/aave-v3-periphery#196
aave/aave-v3-deploy#77