CCIP-read fallback on network errors

[eth-limo]

Describe the Feature

Hello,

Per this thread: https://discuss.ens.domains/t/erc-3668-edge-case-for-clientside-http-ssl-errors/19617, it looks like network errors or non-http error responses can prevent CCIP clients from falling back to a secondary gateway URL. I believe this is also impacting the CCIP-read client in ethers.

This would be a great addition to ethers.js as user implemented offchain resolvers continue to grow.

Thanks!

Code Example

No response