[sdk] Add check if the signer is on the chainId as fromChain

[ecdsafu]

Description / Steps to reproduce

this is a common problem for devs using our SDK. Partners are not used to developing cross chain and a simple error message to show this would save a lot of dev time.

Add a function to the SDK which checks if a signer is on the correct chain for a route, returning (isCorrectChainId: Boolean, message String)

const signerChainId = parseInt(await provider.send("eth_chainId", []), 16).toString();
if (signerChainId !== route.params.fromChain) {
    // throw error "signer is on the wrong chain ID (${signerChainId}). Please use a signer on chain ID ${route.params.fromChain.chainId}"
}

Acceptance Criteria

• isCorrectChainId is available on the SDK

[oi9n]

Description / Steps to reproduce

this is a common problem for devs using our SDK. Partners are not used to developing cross chain and a simple error message to show this would save a lot of dev time.

Add a function to the SDK which checks if a signer is on the correct chain for a route, returning (isCorrectChainId: Boolean, message String)

const signerChainId = parseInt(await provider.send("eth_chainId", []), 16).toString();
if (signerChainId !== route.params.fromChain) {
    // throw error "signer is on the wrong chain ID (${signerChainId}). Please use a signer on chain ID ${route.params.fromChain.chainId}"
}

Acceptance Criteria

• isCorrectChainId is available on the SDK

i have the solution where can i send it to u?

[davidpco]

Addressed by PR #287