Fix test_blob_with_non_standard_digest_and_standard_algo()

$ python -m pytest -n0 tests/old_functional/test_direct_edit.py::TestDirectEdit::test_blob_with_non_standard_digest_and_standard_algo
$ python -m pytest -n0 tests/old_functional/test_direct_edit.py::TestDirectEditNoSync::test_blob_with_non_standard_digest_and_standard_algo

    def test_blob_with_non_standard_digest_and_standard_algo(self):
        """It should be possible to edit a document having a blob with a non-standard digest
        but with a standard algorithm.
        """
    
        from_dict_orig = Blob.from_dict
    
        def from_dict(blob: Dict[str, Any]) -> Blob:
            # Alter digest stuff
            blob["digest"] += "-2"
            return from_dict_orig(blob)
    
        filename = "picture-with-non-standard-digest.png"
        content = random_png(size=42)
        # make_file() will make use of the FileManager and thus creating a Picture document
        doc_id = self.remote.make_file("/", filename, content=content)
    
        scheme, host = self.nuxeo_url.split("://")
        url = (
            f"nxdrive://edit/{scheme}/{host}"
            f"/user/{self.user_1}"
            "/repo/default"
            f"/nxdocid/{doc_id}"
            f"/filename/{filename}"
            f"/downloadUrl/nxfile/default/{doc_id}"
            f"/file:content/{filename}"
        )
    
        content_updated = random_png(size=24)
        with patch.object(Blob, "from_dict", new=from_dict), ensure_no_exception():
>           self._direct_edit_update(doc_id, filename, content_updated, url=url)