Add prefix into TemporaryDirectory to avoid flakiness

File "/__w/spark/spark/python/pyspark/sql/dataframe.py", line ?, in pyspark.sql.dataframe.DataFrame.writeStream
Failed example:
    with tempfile.TemporaryDirectory() as d:
        # Create a table with Rate source.
        df.writeStream.toTable(
            "my_table", checkpointLocation=d)
Exception raised:
    Traceback (most recent call last):
      File "/usr/lib/python3.11/doctest.py", line 1353, in __run
        exec(compile(example.source, filename, "single",
      File "<doctest pyspark.sql.dataframe.DataFrame.writeStream[3]>", line 1, in <module>
        with tempfile.TemporaryDirectory() as d:
      File "/usr/lib/python3.11/tempfile.py", line 1043, in __exit__
        self.cleanup()
      File "/usr/lib/python3.11/tempfile.py", line 1047, in cleanup
        self._rmtree(self.name, ignore_errors=self._ignore_cleanup_errors)
      File "/usr/lib/python3.11/tempfile.py", line 1029, in _rmtree
        _rmtree(name, onerror=onerror)
      File "/usr/lib/python3.11/shutil.py", line 738, in rmtree
        onerror(os.rmdir, path, sys.exc_info())
      File "/usr/lib/python3.11/shutil.py", line 736, in rmtree
        os.rmdir(path, dir_fd=dir_fd)
    OSError: [Errno 39] Directory not empty: '/__w/spark/spark/python/target/4f062b09-213f-4ac2-a10a-2d704990141b/tmp29irqweq'