test: update sort spill test to not parallelize sorts (due to scan repartitioning)

Author: wiedld

datafusion/core/tests/memory_limit/mod.rs

@@ -455,7 +455,9 @@ async fn test_stringview_external_sort() {
         .with_memory_pool(Arc::new(FairSpillPool::new(60 * 1024 * 1024)));
     let runtime = builder.build_arc().unwrap();
 
-    let config = SessionConfig::new().with_sort_spill_reservation_bytes(40 * 1024 * 1024);
+    let config = SessionConfig::new()
+        .with_sort_spill_reservation_bytes(40 * 1024 * 1024)
+        .with_repartition_file_scans(false);
 
     let ctx = SessionContext::new_with_config_rt(config, runtime);
     ctx.register_table("t", Arc::new(table)).unwrap();