Add test for handling no matches in HandleBlueMatches

A new test method, `HandleBlueMatches_ShouldHandleNoMatches`,
was added to the `CodeBreakerAlgorithmsTests` class. This test
validates the behavior of the system when no matches occur by
using a `List<int>` with binary values representing "miss" cases.
This improves test coverage and ensures robustness of the
`HandleBlueMatches` functionality.

Author: christiannagel

src/services/bot/CodeBreaker.Bot.Tests/CodeBreakerAlgorithmsTests.cs

@@ -200,6 +200,9 @@ public void HandleBlueMatches_Should_ReturnUnfiltered_ForOtherGameTypes()
         Assert.Equal(toMatch.Count, actual6x4.Count);
         Assert.Equal(toMatch.Count, actual8x5.Count);
     }
+
+    [Fact]
+    public void HandleBlueMatches_ShouldHandleNoMatches()
     {
         List<int> toMatch =
         [