Make InMemoryConnectionLog class public

Making the class public so that the MaxLogEvents field can be accessed from outside the assembly.

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Co-Authored-By: Claude Sonnet 4.5 <[email protected]>

Author: LukeButters

source/Halibut/Diagnostics/InMemoryConnectionLog.cs

@@ -6,7 +6,7 @@
 
 namespace Halibut.Diagnostics
 {
-    internal class InMemoryConnectionLog : ILog
+    public class InMemoryConnectionLog : ILog
     {
         public static readonly int MaxLogEvents = 100;