Simplify RawNumberToAddressConverter by clearing MSB directly

[konard]

Summary

Simplifies the RawNumberToAddressConverter<TLinkAddress> by directly clearing the most significant bit instead of using the complex Hybrid<TLinkAddress>.AbsoluteValue logic.

Changes Made

• Simplified Conversion Logic: Replaced _converter.Convert(new Hybrid<TLinkAddress>(source).AbsoluteValue) with direct MSB clearing using bitwise AND operation
• Removed Dependencies: Eliminated the need for UncheckedConverter<long, TLinkAddress> and Hybrid<TLinkAddress> instantiation
• Performance Improvement: The new implementation is more efficient as it avoids object creation and complex hybrid number logic
• Clear Intent: The code now directly expresses the intent to clear the MSB (set to 0) as suggested in the issue

Implementation Details

The new implementation:

public TLinkAddress Convert(TLinkAddress source)
{
    // Simplified: just clear the most significant bit to get a positive address
    var longValue = long.CreateTruncating(source);
    var clearedMSB = longValue & 0x7FFFFFFFFFFFFFFF; // Clear MSB using bitwise AND
    return TLinkAddress.CreateTruncating(clearedMSB);
}

The key insight is that the original Hybrid<TLinkAddress>.AbsoluteValue was essentially converting the unsigned value to signed, taking the absolute value, and converting back. This can be simplified to just clearing the most significant bit, which ensures the result is always interpreted as a positive value.

Testing

• Added comprehensive tests in RawNumberToAddressConverterTests.cs to verify the MSB clearing behavior
• Tests cover different unsigned integer types (ulong, uint, ushort, byte)
• Verified that the simplified implementation produces correct results for edge cases

Compatibility

This change maintains the same public API while simplifying the internal implementation. The behavior should be equivalent for all practical use cases where the converter is used to generate positive address values.

Fixes #67

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