Suppress new Style/MapToSet offense

Follow up rubocop/rubocop#11735.

This PR suppresses the following new `Style/MapToSet` offense:

```console
% bundle exec rubocop
(snip)

Offenses:

lib/rubocop/ast/node_pattern/compiler/atom_subcompiler.rb:41:33: C: [Correctable] Style/MapToSet: Pass a block to to_set instead of calling map.to_set.
            set = node.children.map(&:child).to_set.freeze
                                ^^^

163 files inspected, 1 offense detected, 1 offense autocorrectable
```

lib/rubocop/ast/node_pattern/compiler/atom_subcompiler.rb

@@ -38,7 +38,7 @@ def visit_positional_parameter
           end
 
           def visit_set
-            set = node.children.map(&:child).to_set.freeze
+            set = node.children.to_set(&:child).freeze
             NodePattern::Sets[set]
           end