fix: RPC responses didn't reach the UI; crashes, missing RPC methods;

[JeneaVranceanu]

1. Added all RPCs from Notion to EthereumProvider (the provider for the WalletConnect). As it appears it was missing requests like eth_getId which resulted in the following error:

2. Missing return! Looks like responses were discarded just because of the missing return.
3. Swapped setupWeb3(provider as unknown as Provider) and setState('isConnected', true/false) to set provider first. After setting isConnected to true it triggers several background requests like web3.eth?.getChainId() but we have no provider and thus receive the following error:

Swapping fixes the error.

[github-actions[bot]]

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• URL: https://fix-supported-methods-and-rp.universalprofile-test-dapp.pages.dev
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[JeneaVranceanu]

Mainnet added to rpcMap. Ready to be deployed 🚀