Update Groups cluster XML to match spec. (#26819)

* Update Groups cluster XML to match spec.

Spec changes happened in https://github.com/CHIP-Specifications/connectedhomeip-spec/pull/6429

Fixes https://github.com/project-chip/connectedhomeip/issues/26209

* Auto-update ZAP files.

* Regenerate generated code.
diff --git a/examples/chef/devices/rootnode_fan_7N2TobIlOX.matter b/examples/chef/devices/rootnode_fan_7N2TobIlOX.matter
index 582bd4f..7423ec6 100644
--- a/examples/chef/devices/rootnode_fan_7N2TobIlOX.matter
+++ b/examples/chef/devices/rootnode_fan_7N2TobIlOX.matter
@@ -63,7 +63,11 @@
     kGroupNames = 0x1;
   }
 
-  readonly attribute bitmap8 nameSupport = 0;
+  bitmap NameSupportBitmap : BITMAP8 {
+    kGroupNames = 0x80;
+  }
+
+  readonly attribute NameSupportBitmap nameSupport = 0;
   readonly attribute command_id generatedCommandList[] = 65528;
   readonly attribute command_id acceptedCommandList[] = 65529;
   readonly attribute event_id eventList[] = 65530;