Add some nullability attributes

Author: andrewlock

tracer/src/Datadog.Trace/ClrProfiler/AutoInstrumentation/MongoDb/IWireProtocol_3_5_ExecuteAsync_Integration.cs

@@ -43,7 +43,7 @@ internal static CallTargetState OnMethodBegin<TTarget, TOperationContext, TConne
         return new CallTargetState(scope);
     }
 
-    internal static TReturn? OnAsyncMethodEnd<TTarget, TReturn>(TTarget instance, TReturn? returnValue, Exception exception, in CallTargetState state)
+    internal static TReturn? OnAsyncMethodEnd<TTarget, TReturn>(TTarget instance, TReturn? returnValue, Exception? exception, in CallTargetState state)
     {
         var scope = state.Scope;
 

tracer/src/Datadog.Trace/ClrProfiler/AutoInstrumentation/MongoDb/IWireProtocol_3_5_Execute_Integration.cs

@@ -35,7 +35,7 @@ namespace Datadog.Trace.ClrProfiler.AutoInstrumentation.MongoDb;
 [EditorBrowsable(EditorBrowsableState.Never)]
 public class IWireProtocol_3_5_Execute_Integration
 {
-    internal static CallTargetState OnMethodBegin<TTarget, TOperationContext, TConnection>(TTarget instance, TOperationContext operationContext, TConnection connection)
+    internal static CallTargetState OnMethodBegin<TTarget, TOperationContext, TConnection>(TTarget instance, TOperationContext? operationContext, TConnection connection)
         where TConnection : IConnection
     {
         var scope = MongoDbIntegration.CreateScope(instance, connection);
@@ -53,7 +53,7 @@ internal static CallTargetState OnMethodBegin<TTarget, TOperationContext, TConne
     /// <param name="exception">Exception instance in case the original code threw an exception.</param>
     /// <param name="state">Calltarget state value</param>
     /// <returns>A response value, in an async scenario will be T of Task of T</returns>
-    internal static CallTargetReturn<TReturn> OnMethodEnd<TTarget, TReturn>(TTarget instance, TReturn returnValue, Exception exception, in CallTargetState state)
+    internal static CallTargetReturn<TReturn> OnMethodEnd<TTarget, TReturn>(TTarget instance, TReturn returnValue, Exception? exception, in CallTargetState state)
     {
         var scope = state.Scope;