🧪 [Testing Improvement] Add tests for AsyncOption bind

[kai-orion]

• 🎯 What: The testing gap addressed is the missing test file for src/async-option/bind.ts.
• 📊 Coverage: The new tests cover chaining with functions returning AsyncOption (resolving to Some or None), functions returning Promise<IOption> for interoperability, correct error handling for both synchronous and asynchronous callback exceptions (ensuring they correctly return None), bypass logic when the input AsyncOption resolves to None, and curried execution paths.
• ✨ Result: The improvement in test coverage guarantees the structural integrity and functionality of the bind operation on the AsyncOption railway, ensuring reliability in asynchronous monadic pipelines.

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PR created automatically by Jules for task 9237444932892496703 started by @kai-orion

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