Fix infinite loop in source generator exception handler

[fdcastel]

Problem

The catch block in TypeFactoryGenerator.GenerateSource() walks inner exceptions using variable e, but every iteration reads from exception (the outer variable) instead of e. This produces an infinite loop that only ever prints the outermost message and never terminates.

var e = exception;
while (e != null)
{
    write(exception.Message, true);    // BUG: should be e.Message
    write(exception.StackTrace, true); // BUG: should be e.StackTrace
    write("======", true);
    e = exception.InnerException;      // BUG: should be e.InnerException
}

Fix

Replace exception with e inside the loop body for Message, StackTrace, and InnerException.

Tests Added

• InnerExceptionTraversal_TerminatesAndCapturesAllMessages — 3-level exception chain
• InnerExceptionTraversal_SingleException_TerminatesAfterOne — single exception
• ErrorCommentFormat_ContainsAllExceptionDetails — validates full output format

Files Changed

• YamlDotNet.Analyzers.StaticGenerator/TypeFactoryGenerator.cs
• YamlDotNet.Test/Analyzers/StaticGenerator/TypeFactoryGeneratorTests.cs (new)