Align naming in Descriptor cluster XML with the spec. (#24238)

* Align naming in Descriptor cluster XML with the spec.

* Regenerate generated files.
diff --git a/examples/lighting-app/lighting-common/lighting-app.matter b/examples/lighting-app/lighting-common/lighting-app.matter
index d122bdf..e9cdbc1 100644
--- a/examples/lighting-app/lighting-common/lighting-app.matter
+++ b/examples/lighting-app/lighting-common/lighting-app.matter
@@ -273,7 +273,7 @@
 
 server cluster Descriptor = 29 {
   struct DeviceTypeStruct {
-    devtype_id type = 0;
+    devtype_id deviceType = 0;
     int16u revision = 1;
   }