Tell the compiler that VBuffer is scoped to Create call

This prevents errors CS9077 and CS8347 which are raised where the
compiler cannot determine if the reference parameter destination is
leaked.

Author: ericstj

src/Microsoft.ML.DataView/VBufferEditor.cs

@@ -20,7 +20,7 @@ public static class VBufferEditor
         /// of this passed in object, and so whatever <see cref="VBuffer{T}"/> was passed in as this parameter should not be used again, since its
         /// underlying buffers are being potentially reused.</param>
         public static VBufferEditor<T> CreateFromBuffer<T>(
-            ref VBuffer<T> destination)
+            scoped ref VBuffer<T> destination)
         {
             return destination.GetEditor();
         }
@@ -53,7 +53,7 @@ public static VBufferEditor<T> CreateFromBuffer<T>(
         /// True means to ensure the Indices buffer is available, even if the buffer will be dense.
         /// </param>
         public static VBufferEditor<T> Create<T>(
-            ref VBuffer<T> destination,
+            scoped ref VBuffer<T> destination,
             int newLogicalLength,
             int? valuesCount = null,
             int? maxValuesCapacity = null,