Provide better error for wrong ast_serialize version with parallel checking

Currently if you have ast_serialize==0.2 installed and you try to type check mypy, you get a slightly confusing:

λ python -m mypy --config-file mypy_self_check.ini -p mypy --no-incremental
/Users/shantanu/dev/mypy/mypy/typeshed/stdlib/posixpath.pyi: error: INTERNAL ERROR -- Please try using mypy master on GitHub:
https://mypy.readthedocs.io/en/stable/common_issues.html#using-a-development-mypy-build
Please report a bug at https://github.com/python/mypy/issues
version: 2.1.0+dev.0a72750b6d7f0f2dfaf65f49e63a74882c6b1108
Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "/Users/shantanu/dev/mypy/mypy/build_worker/__main__.py", line 6, in <module>
    console_entry()
  File "/Users/shantanu/dev/mypy/mypy/build_worker/worker.py", line 356, in console_entry
    main(sys.argv[1:])
  File "/Users/shantanu/dev/mypy/mypy/build_worker/worker.py", line 121, in main
    serve(server, ctx)
  File "/Users/shantanu/dev/mypy/mypy/build_worker/worker.py", line 220, in serve
    load_states(mod_ids, graph, manager, scc_message.import_errors, scc_message.mod_data)
  File "/Users/shantanu/dev/mypy/mypy/build_worker/worker.py", line 284, in load_states
    state.parse_file(raw_data=raw_data)
  File "/Users/shantanu/dev/mypy/mypy/build.py", line 3225, in parse_file
    with self.wrap_context():
  File "/Users/shantanu/Library/Application Support/uv/python/cpython-3.14.2-macos-aarch64-none/lib/python3.14/contextlib.py", line 162, in __exit__
    self.gen.throw(value)
  File "/Users/shantanu/dev/mypy/mypy/build.py", line 3077, in wrap_context
    yield
  File "/Users/shantanu/dev/mypy/mypy/build.py", line 3233, in parse_file
    self.parse_file_inner(source, raw_data)
    ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/Users/shantanu/dev/mypy/mypy/build.py", line 3197, in parse_file_inner
    self.tree = self.manager.parse_file(
                ~~~~~~~~~~~~~~~~~~~~~~~^
        self.id, self.xpath, source, options=self.options, raw_data=raw_data
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/Users/shantanu/dev/mypy/mypy/build.py", line 1294, in parse_file
    tree = load_from_raw(path, id, raw_data, self.errors, options)
  File "/Users/shantanu/dev/mypy/mypy/parse.py", line 80, in load_from_raw
    defs = read_statements(state, data, n)
  File "/Users/shantanu/dev/mypy/mypy/nativeparse.py", line 242, in read_statements
    stmt = read_statement(state, data)
  File "/Users/shantanu/dev/mypy/mypy/nativeparse.py", line 431, in read_statement
    _read_and_set_import_metadata(data, stmt)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
  File "/Users/shantanu/dev/mypy/mypy/nativeparse.py", line 2022, in _read_and_set_import_metadata
    flags = read_int(data)
  File "/Users/shantanu/dev/mypy/mypy/cache.py", line 368, in read_int
    assert read_tag(data) == LITERAL_INT
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError

/Users/shantanu/dev/mypy/mypy/typeshed/stdlib/posixpath.pyi: note: use --pdb to drop into pdb
error: INTERNAL ERROR -- Please try using mypy master on GitHub:
https://mypy.readthedocs.io/en/stable/common_issues.html#using-a-development-mypy-build
Please report a bug at https://github.com/python/mypy/issues
version: 2.1.0+dev.0a72750b6d7f0f2dfaf65f49e63a74882c6b1108
Traceback (most recent call last):
  File "/Users/shantanu/dev/mypy/mypy/build.py", line 1392, in receive_worker_message
    return receive(self.workers[idx].conn)
  File "/Users/shantanu/dev/mypy/mypy/ipc.py", line 481, in receive
    raise OSError("No data received")
OSError: No data received

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "/Users/shantanu/dev/mypy/mypy/__main__.py", line 52, in <module>
    console_entry()
  File "/Users/shantanu/dev/mypy/mypy/__main__.py", line 16, in console_entry
    main()
    ~~~~^^
  File "/Users/shantanu/dev/mypy/mypy/main.py", line 154, in main
    res, messages, blockers = run_build(sources, options, fscache, t0, stdout, stderr)
                              ~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/shantanu/dev/mypy/mypy/main.py", line 244, in run_build
    res = build.build(sources, options, None, flush_errors, fscache, stdout, stderr)
  File "/Users/shantanu/dev/mypy/mypy/build.py", line 422, in build
    result = build_inner(
        sources,
    ...<9 lines>...
        metastore,
    )
  File "/Users/shantanu/dev/mypy/mypy/build.py", line 537, in build_inner
    graph = dispatch(sources, manager, stdout, connect_threads)
  File "/Users/shantanu/dev/mypy/mypy/build.py", line 4150, in dispatch
    process_graph(graph, manager)
    ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^
  File "/Users/shantanu/dev/mypy/mypy/build.py", line 4618, in process_graph
    done, still_working, results = manager.wait_for_done(graph)
                                   ~~~~~~~~~~~~~~~~~~~~~^^^^^^^
  File "/Users/shantanu/dev/mypy/mypy/build.py", line 1488, in wait_for_done
    return self.wait_for_done_workers(graph)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^
  File "/Users/shantanu/dev/mypy/mypy/build.py", line 1507, in wait_for_done_workers
    buf = self.receive_worker_message(idx)
  File "/Users/shantanu/dev/mypy/mypy/build.py", line 1400, in receive_worker_message
    raise OSError(
        f"Worker {idx} disconnected before sending data ({exit_status})"
    ) from exc
OSError: Worker 0 disconnected before sending data (exit code 2)

Start with the failing path in mypy/nativeparse.py and mypy/cache.py, then trace how mypy/build_worker/worker.py handles the corrupted or incompatible serialized data during parallel checking. Reproduce the ast_serialize==0.2 failure using the command in the issue. Done means an incompatible version produces a clear user-facing error instead of an assertion and worker-disconnect traceback.