Implement workaround for OTel spans exceptions

[hellais]

Sporadically we see this happening:

Traceback (most recent call last):
  File "/home/art/repos/ooni/data/oonipipeline/.venv/lib/python3.11/site-packages/opentelemetry/context/__init__.py", line 163, in detach
    _RUNTIME_CONTEXT.detach(token)  # type: ignore
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/art/repos/ooni/data/oonipipeline/.venv/lib/python3.11/site-packages/opentelemetry/context/contextvars_context.py", line 50, in detach
    self._current_context.reset(token)  # type: ignore
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ValueError: <Token var=<ContextVar name='current_context' default={} at 0x7f18a5587bf0> at 0x7f171ce74b00> was created in a different Context

There is an open ticket about this on temporal: temporalio/sdk-python#441 and a recommended workaround here: open-telemetry/opentelemetry-python#2606 (comment)

We should look into implementing it