Confusion about "append" mode in `sow`

I think I am confused on how to use the "append" mode in `sow`, I would expect the following code

``` python
from oryx.core import sow, reap

def f(x):
x = sow(x + 1.0, tag="tag", name="x", mode="append")
x = sow(x + 1.0, tag="tag", name="x", mode="append")
return x

print(reap(f, tag="tag")(1))
```

To output something similar to `{'x': [2, 3]}`, as the documentation says: "Another option is 'append', in which all sows of the same name will be appended into a growing array.". However, I get the same error as in strict mode, which is

```
Traceback (most recent call last):
File "/home/anton/flarenet/oryx_example_append.py", line 11, in
print(reap(f, tag="tag")(1))
^^^^^^^^^^^^^^^^^^^^^
File "/home/anton/flarenet/.venv/lib/python3.12/site-packages/oryx/core/interpreters/harvest.py", line 868, in wrapped
return call_and_reap(
^^^^^^^^^^^^^^
File "/home/anton/flarenet/.venv/lib/python3.12/site-packages/oryx/core/interpreters/harvest.py", line 801, in wrapped
out, reaps, preds = _call_and_reap(
^^^^^^^^^^^^^^^
File "/home/anton/flarenet/.venv/lib/python3.12/site-packages/oryx/core/interpreters/harvest.py", line 838, in wrapped
out_flat, reaps, preds = flat_fun.call_wrapped(flat_args)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/anton/flarenet/.venv/lib/python3.12/site-packages/jax/_src/linear_util.py", line 192, in call_wrapped
ans = self.f(*args, **dict(self.params, **kwargs))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/anton/flarenet/oryx_example_append.py", line 7, in f
x = sow(x + 1.0, tag="tag", name="x", mode="append")
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/anton/flarenet/.venv/lib/python3.12/site-packages/oryx/core/interpreters/harvest.py", line 253, in sow
return _sow(value, tag=tag, name=name, mode=mode, key=key)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/anton/flarenet/.venv/lib/python3.12/site-packages/oryx/core/interpreters/harvest.py", line 301, in _sow
out_flat = sow_p.bind(*flat_args, name=name, tag=tag, mode=mode, tree=in_tree)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/anton/flarenet/.venv/lib/python3.12/site-packages/jax/_src/core.py", line 416, in bind
return self.bind_with_trace(find_top_trace(args), args, params)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/anton/flarenet/.venv/lib/python3.12/site-packages/jax/_src/core.py", line 420, in bind_with_trace
out = trace.process_primitive(self, map(trace.full_raise, args), params)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/anton/flarenet/.venv/lib/python3.12/site-packages/oryx/core/interpreters/harvest.py", line 396, in process_primitive
return self.default_process_primitive(primitive, tracers, params)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/anton/flarenet/.venv/lib/python3.12/site-packages/oryx/core/interpreters/harvest.py", line 404, in default_process_primitive
outvals = context.process_sow(*vals, **params)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/anton/flarenet/.venv/lib/python3.12/site-packages/oryx/core/interpreters/harvest.py", line 508, in process_sow
return self.handle_sow(*values, name=name, tag=tag, tree=tree, mode=mode)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/anton/flarenet/.venv/lib/python3.12/site-packages/oryx/core/interpreters/harvest.py", line 567, in handle_sow
raise ValueError(f'Variable has already been reaped: {name}')
ValueError: Variable has already been reaped: x
```

I am using `python 3.12.3` with `jax==0.4.29` and `jaxlib==0.4.29`. The same code with `mode` set to "clobber" works as described in the documentation.
I would like to have a way to use the same name and tag multiple times, but still be able to `reap` or `plant` in/from (specific) parts of the `sow`ed places, since I do not want to force users to call functions with `sow` in them with `nest`.
What is the recommended way to do this and could you perhaps provide a minimal working example using the append `mode`?

Please let me know if you would like any further information.
Thank you very much!

Reproduce the example with the versions shown, then inspect oryx/core/interpreters/harvest.py, especially sow and handle_sow. Compare the append-mode behavior with the documentation and determine whether the implementation or the example is wrong. Done means the expected repeated-name behavior is clarified with a minimal working example, or a tested fix is identified.

Written by the indexing model from the issue text.