Pin .NET 8 SDK and make resume assertion compiler-independent

Author: ntdevlabs

global.json

@@ -0,0 +1,7 @@
+{
+  "sdk": {
+    "version": "8.0.400",
+    "rollForward": "latestFeature",
+    "allowPrerelease": false
+  }
+}

tests/Tiny11Builder.Core.Tests/ResumeRefusalTests.cs

@@ -223,7 +223,7 @@ public async Task Reordering_the_selected_options_is_not_a_change()
         var job = await JobScenarios.InterruptAtCommitAsync(fixture, fixture.Recipe with { SelectedOptions = ["copilot-app", "cleanup"] });
         var original = JobScenarios.OriginalRecipe(job.WorkDirectory);
         var result = await fixture.Engine.ResumeAsync(JobScenarios.JobFile(job),
-            original with { SelectedOptions = [.. original.SelectedOptions.Reverse()] }, null, CancellationToken.None);
+            original with { SelectedOptions = [.. Enumerable.Reverse(original.SelectedOptions)] }, null, CancellationToken.None);
         Assert.True(File.Exists(result.IsoPath));
     }