A MetaMask JSON-RPC API method for retrieving the list of networks currently added in the metamask browser extension

Description:
I am working on an NFT bridge and I so I am dealing with several chains in my project. I need a method to get the list of networks that are currently added in the user’s MetaMask extension so that I can call the wallet_addEthereumChain method if the network selected by user inside the project does not exist in user’s MetaMask extension

Purpose:
This would make it easier to decide when we need to call the wallet_addEthereumChain method.

Extension/Mobile/Both:
Both

Images/Attacments: