fix sorting of compilation unit members - related to #23947

pkg/analyzer/lib/src/generated/ast.dart

Index: pkg/analyzer/lib/src/generated/ast.dart
diff --git a/pkg/analyzer/lib/src/generated/ast.dart b/pkg/analyzer/lib/src/generated/ast.dart
index f110d52d77135305c8e267538d3fc7d521880161..2b4d1a7633f21e8b0f07266aa3bd8b1d7b94c075 100644
--- a/pkg/analyzer/lib/src/generated/ast.dart
+++ b/pkg/analyzer/lib/src/generated/ast.dart
@@ -2730,7 +2730,7 @@ abstract class AstNode {
    * greater than the offset of the second node.
    */
   static Comparator<AstNode> LEXICAL_ORDER =
-      (AstNode first, AstNode second) => second.offset - first.offset;
+      (AstNode first, AstNode second) => first.offset - second.offset;
 
   /**
    * The parent of the node, or `null` if the node is the root of an AST