Remove extra disposal (#10052)

Author: YuliiaKovalova

src/Tasks/ManifestUtil/ManifestReader.cs

@@ -224,8 +224,8 @@ public static Manifest ReadManifest(string manifestType, Stream input, bool pres
         private static Manifest Deserialize(Stream s)
         {
             s.Position = 0;
-            using var r = new XmlTextReader(s) { DtdProcessing = DtdProcessing.Ignore };
-
+            var settings = new XmlReaderSettings { DtdProcessing = DtdProcessing.Ignore, CloseInput = false };
+            using XmlReader r = XmlReader.Create(s, settings);
             do
             {
                 r.Read();