Fix test

Author: teamurko

spark/v3.5/spark/src/test/java/org/apache/iceberg/spark/actions/TestRewriteDataFilesAction.java

@@ -1604,7 +1604,7 @@ public void testMaxTotalFileGroupSizeBytesZeroMeansNoLimit() {
         basicRewrite(table)
             .option(
                 RewriteDataFiles.MAX_FILE_GROUP_SIZE_BYTES, Integer.toString(fileSize * 2 + 1000))
-            .option(RewriteDataFiles.MAX_TOTAL_FILE_GROUP_SIZE_BYTES, "0")
+            .option(RewriteDataFiles.MAX_TOTAL_FILE_GROUP_SIZE_BYTES, null)
             .execute();
 
     // Should process all 10 groups when limit is 0