Fetch Stack from Chains Database

[0xFirekeeper]

Support current and future zk chains automatically

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PR-Codex overview

This PR focuses on enhancing the Utils class to support asynchronous operations and improve the handling of zkSync chain data across various components in the Thirdweb library.

Detailed summary

• Added a new test method FetchThirdwebChainDataAsync_ReturnsStack_WhenResponseIsSuccessful to validate successful responses.
• Updated IsZkSync method to be asynchronous and include additional chain ID checks.
• Modified multiple classes to call the asynchronous IsZkSync method.
• Adjusted logic in GetChainMetadata to handle null or empty explorers.
• Ensured consistent use of asynchronous calls when checking for zkSync across ThirdwebTransaction and SmartWallet classes.

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