Implement "reserved" for extension declaration.

This can be useful when an extension field/declaration is deleted in schema to avoid data corruption.

It also adds a check for duplicate numbers in the declarations.

PiperOrigin-RevId: 523269837
diff --git a/ruby/ext/google/protobuf_c/ruby-upb.h b/ruby/ext/google/protobuf_c/ruby-upb.h
index 0fa668f..58fba94 100755
--- a/ruby/ext/google/protobuf_c/ruby-upb.h
+++ b/ruby/ext/google/protobuf_c/ruby-upb.h
@@ -4875,6 +4875,21 @@
   const upb_MiniTableField field = {4, 8, 4, kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)};
   return _upb_Message_HasNonExtensionField(msg, &field);
 }
+UPB_INLINE void google_protobuf_ExtensionRangeOptions_Declaration_clear_reserved(google_protobuf_ExtensionRangeOptions_Declaration* msg) {
+  const upb_MiniTableField field = {5, 9, 5, kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)};
+  _upb_Message_ClearNonExtensionField(msg, &field);
+}
+UPB_INLINE bool google_protobuf_ExtensionRangeOptions_Declaration_reserved(const google_protobuf_ExtensionRangeOptions_Declaration* msg) {
+  bool default_val = false;
+  bool ret;
+  const upb_MiniTableField field = {5, 9, 5, kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)};
+  _upb_Message_GetNonExtensionField(msg, &field, &default_val, &ret);
+  return ret;
+}
+UPB_INLINE bool google_protobuf_ExtensionRangeOptions_Declaration_has_reserved(const google_protobuf_ExtensionRangeOptions_Declaration* msg) {
+  const upb_MiniTableField field = {5, 9, 5, kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)};
+  return _upb_Message_HasNonExtensionField(msg, &field);
+}
 
 UPB_INLINE void google_protobuf_ExtensionRangeOptions_Declaration_set_number(google_protobuf_ExtensionRangeOptions_Declaration *msg, int32_t value) {
   const upb_MiniTableField field = {1, 4, 1, kUpb_NoSub, 5, kUpb_FieldMode_Scalar | (kUpb_FieldRep_4Byte << kUpb_FieldRep_Shift)};
@@ -4892,6 +4907,10 @@
   const upb_MiniTableField field = {4, 8, 4, kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)};
   _upb_Message_SetNonExtensionField(msg, &field, &value);
 }
+UPB_INLINE void google_protobuf_ExtensionRangeOptions_Declaration_set_reserved(google_protobuf_ExtensionRangeOptions_Declaration *msg, bool value) {
+  const upb_MiniTableField field = {5, 9, 5, kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)};
+  _upb_Message_SetNonExtensionField(msg, &field, &value);
+}
 
 /* google.protobuf.FieldDescriptorProto */