[I] test(services/cos): skip create-dir list checks that require strong list consistency [opendal]

["Xuanwo (via GitHub)" <gi...@apache.org>]

Xuanwo opened a new issue, #7502:
URL: https://github.com/apache/opendal/issues/7502

   ## Problem
   
   `behavior::test_list_sub_dir` can fail for COS after creating a directory marker and immediately listing the bucket root:
   
   ```text
   dir should be found in list
   ```
   
   OpenDAL simulates `create_dir` for COS by writing an empty object at `<uuid>/`. The test then immediately calls `list("/")` and expects the new directory marker to be returned.
   
   ## Root cause
   
   Tencent COS documents that GET Bucket / List Objects is eventually consistent after uploads. If an object is uploaded and GET Bucket is called immediately, the returned result may not include the newly uploaded object.
   
   Reference: https://www.tencentcloud.com/document/product/436/30614/
   
   ## Expected handling
   
   Behavior tests that require immediate read-after-write visibility through COS ListObjects should be skipped for COS, because the service contract does not provide the required strong list consistency.
   


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