Let UriEndpoint ToString return the Uri (#12668)

src/Servers/Connections.Abstractions/ref/Microsoft.AspNetCore.Connections.Abstractions.netcoreapp.cs

@@ -133,6 +133,7 @@ namespace Microsoft.AspNetCore.Connections
     {
         public UriEndPoint(System.Uri uri) { }
         public System.Uri Uri { [System.Runtime.CompilerServices.CompilerGeneratedAttribute]get { throw null; } }
+        public override string ToString() { throw null; }
     }
 }
 namespace Microsoft.AspNetCore.Connections.Features

src/Servers/Connections.Abstractions/ref/Microsoft.AspNetCore.Connections.Abstractions.netstandard2.0.cs

@@ -133,6 +133,7 @@ namespace Microsoft.AspNetCore.Connections
     {
         public UriEndPoint(System.Uri uri) { }
         public System.Uri Uri { [System.Runtime.CompilerServices.CompilerGeneratedAttribute]get { throw null; } }
+        public override string ToString() { throw null; }
     }
 }
 namespace Microsoft.AspNetCore.Connections.Features

src/Servers/Connections.Abstractions/ref/Microsoft.AspNetCore.Connections.Abstractions.netstandard2.1.cs

@@ -133,6 +133,7 @@ namespace Microsoft.AspNetCore.Connections
     {
         public UriEndPoint(System.Uri uri) { }
         public System.Uri Uri { [System.Runtime.CompilerServices.CompilerGeneratedAttribute]get { throw null; } }
+        public override string ToString() { throw null; }
     }
 }
 namespace Microsoft.AspNetCore.Connections.Features

src/Servers/Connections.Abstractions/src/UriEndPoint.cs

@@ -24,5 +24,7 @@ namespace Microsoft.AspNetCore.Connections
         /// The <see cref="System.Uri"/> defining the <see cref="EndPoint"/>.
         /// </summary>
         public Uri Uri { get; }
+
+        public override string ToString() => Uri.ToString();
     }
 }