Only store data version if the readCache changed (project-chip#33466)

* Only store data version if the readCache changed

* Restyled by clang-format

---------

Co-authored-by: Restyled.io <commits@restyled.io>

Author: woody-apple

src/darwin/Framework/CHIP/MTRDevice.mm

@@ -2534,8 +2534,6 @@ - (NSArray *)_getAttributesToReportWithReportedValues:(NSArray<NSDictionary<NSSt
             NSNumber * dataVersion = attributeDataValue[MTRDataVersionKey];
             MTRClusterPath * clusterPath = [MTRClusterPath clusterPathWithEndpointID:attributePath.endpoint clusterID:attributePath.cluster];
             if (dataVersion) {
-                [self _noteDataVersion:dataVersion forClusterPath:clusterPath];
-
                 // Remove data version from what we cache in memory
                 attributeDataValue = [self _dataValueWithoutDataVersion:attributeDataValue];
             }
@@ -2544,6 +2542,10 @@ - (NSArray *)_getAttributesToReportWithReportedValues:(NSArray<NSDictionary<NSSt
             BOOL readCacheValueChanged = ![self _attributeDataValue:attributeDataValue isEqualToDataValue:previousValue];
             // Now that we have grabbed previousValue, update our cache with the attribute value.
             if (readCacheValueChanged) {
+                if (dataVersion) {
+                    [self _noteDataVersion:dataVersion forClusterPath:clusterPath];
+                }
+
                 [self _setCachedAttributeValue:attributeDataValue forPath:attributePath];
                 if (!_deviceConfigurationChanged) {
                     _deviceConfigurationChanged = [self _attributeAffectsDeviceConfiguration:attributePath];