Disable transform for Span<T> initialization from field with RVA if "ArrayInitializers" setting is disabled.

https://github.com/ashmind/SharpLab/issues/542

ICSharpCode.Decompiler/IL/Transforms/TransformArrayInitializers.cs

@@ -116,6 +116,8 @@ namespace ICSharpCode.Decompiler.IL.Transforms
 		internal static bool TransformSpanTArrayInitialization(NewObj inst, StatementTransformContext context, out Block block)
 		{
 			block = null;
+			if (!context.Settings.ArrayInitializers)
+				return false;
 			if (MatchSpanTCtorWithPointerAndSize(inst, context, out var elementType, out var field, out var size))
 			{
 				if (field.HasFlag(System.Reflection.FieldAttributes.HasFieldRVA))