Fix failing test case BindingAsyncTasklikeMoreTests.Dynamic on Mono (#79878)

* Fix failing test case Microsoft.CodeAnalysis.CSharp.UnitTests.Semantics.BindingAsyncTasklikeMoreTests.Dynamic on Mono

The BindingAsyncTasklikeMoreTests.Dynamic test was failing on Mono because
the type of ConstructorArguments differs between Mono and CoreCLR. The
existing test expectation was aligned with CoreCLR behavior, which caused
mismatches when running under Mono.

This change updates the test to set the expected value based on the current
runtime.

* Put the condition down in one parameter

Author: Venkad000

src/Compilers/CSharp/Test/Semantic/Semantics/BindingAsyncTasklikeMoreTests.cs

@@ -647,9 +647,23 @@ public void AwaitUnsafeOnCompleted<TAwaiter, TStateMachine>(ref TAwaiter awaiter
 namespace System.Runtime.CompilerServices { class AsyncMethodBuilderAttribute : System.Attribute { public AsyncMethodBuilderAttribute(System.Type t) { } } }
 ";
             var compilation = CreateCompilationWithMscorlib461(source, references: new MetadataReference[] { CSharpRef, SystemCoreRef });
-            var verifier = CompileAndVerify(
-                compilation,
-                expectedSignatures: new[]
+            var expectedSignatures = ExecutionConditionUtil.IsMonoCore
+                ? new[]
+                {
+                    Signature(
+                        "C+<>c__DisplayClass2_0",
+                        "<M>b__0",
+                        ".method [System.Runtime.CompilerServices.AsyncStateMachineAttribute(C+<>c__DisplayClass2_0+<<M>b__0>d)] assembly hidebysig instance [System.Runtime.CompilerServices.DynamicAttribute(System.Boolean[])] MyTask`1[System.Object] <M>b__0() cil managed"),
+                    Signature(
+                        "C+<>c__DisplayClass2_0",
+                        "<M>b__1",
+                        ".method [System.Runtime.CompilerServices.AsyncStateMachineAttribute(C+<>c__DisplayClass2_0+<<M>b__1>d)] assembly hidebysig instance [System.Runtime.CompilerServices.DynamicAttribute(System.Boolean[])] MyTask`1[System.Object[]] <M>b__1() cil managed"),
+                    Signature(
+                        "C+<>c__DisplayClass2_0",
+                        "<M>b__2",
+                        ".method [System.Runtime.CompilerServices.AsyncStateMachineAttribute(C+<>c__DisplayClass2_0+<<M>b__2>d)] assembly hidebysig instance [System.Runtime.CompilerServices.DynamicAttribute(System.Boolean[])] MyTask`1[System.Object] <M>b__2() cil managed"),
+                }
+                : new[]
                 {
                     Signature(
                         "C+<>c__DisplayClass2_0",
@@ -663,7 +677,12 @@ namespace System.Runtime.CompilerServices { class AsyncMethodBuilderAttribute :
                         "C+<>c__DisplayClass2_0",
                         "<M>b__2",
                         ".method [System.Runtime.CompilerServices.AsyncStateMachineAttribute(C+<>c__DisplayClass2_0+<<M>b__2>d)] assembly hidebysig instance [System.Runtime.CompilerServices.DynamicAttribute(System.Collections.ObjectModel.ReadOnlyCollection`1[System.Reflection.CustomAttributeTypedArgument])] MyTask`1[System.Object] <M>b__2() cil managed"),
-                });
+                };
+
+            var verifier = CompileAndVerify(
+                compilation,
+                expectedSignatures: expectedSignatures);
+
             verifier.VerifyDiagnostics();
         }