chore(tests): add tests for retry logic

Author: stainless-app[bot]

src/Orb.Tests/Orb.Tests.csproj

@@ -14,6 +14,7 @@
   <ItemGroup>
     <PackageReference Include="coverlet.collector" Version="6.0.4" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
+    <PackageReference Include="Moq" Version="4.20.72" />
     <PackageReference Include="xunit.v3" Version="3.2.1" />
     <PackageReference Include="xunit.analyzers" Version="1.26.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5" />