fix: correct type casting for GenericData.Array in convertMap method

Author: Gezi-lzq

core/src/main/java/kafka/automq/table/binder/AvroValueAdapter.java

@@ -126,7 +126,8 @@ protected List<?> convertList(Object sourceValue, Schema sourceSchema, Types.Lis
 
     @Override
     protected Map<?, ?> convertMap(Object sourceValue, Schema sourceSchema, Types.MapType targetType) {
-        if (sourceValue instanceof GenericData.Array<?> arrayValue) {
+        if (sourceValue instanceof GenericData.Array) {
+            GenericData.Array<?> arrayValue = (GenericData.Array<?>) sourceValue;
             // Handle map represented as an array of key-value records
             Map<Object, Object> recordMap = new HashMap<>();
             Schema kvSchema = sourceSchema.getElementType();