Calling isort with `--sort-reexports` with input from stdin fails

[ipvych]

Output of isort --version: 6.0.1

Steps to reproduce

echo 'from test import A, B
__all__ = ["A", "B"]' > test.py
isort --sort-reexports - < test.py

Result

Traceback (most recent call last):
  File "/usr/bin/isort", line 8, in <module>
    sys.exit(main())
             ~~~~^^
  File "/usr/lib/python3.13/site-packages/isort/main.py", line 1146, in main
    api.sort_stream(
    ~~~~~~~~~~~~~~~^
        input_stream=input_stream,
        ^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<5 lines>...
        raise_on_skip=False,
        ^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/lib/python3.13/site-packages/isort/api.py", line 211, in sort_stream
    changed = core.process(
        input_stream,
    ...<3 lines>...
        raise_on_skip=raise_on_skip,
    )
  File "/usr/lib/python3.13/site-packages/isort/core.py", line 139, in process
    output_stream.seek(output_stream.tell() - reexport_rollback)
                       ~~~~~~~~~~~~~~~~~~^^
io.UnsupportedOperation: underlying stream is not seekable