[Core] Fix trio mypy errors (#33003)

The latest version of trio removed the `run_sync_in_worker_thread`
method causing mypy to complain. This change adds a type ignore comment
to places where this is called since it'll only hit that code path if
an old enough version of trio is used.

Signed-off-by: Paul Van Eck <[email protected]>

Author: pvaneck

sdk/core/azure-core/azure/core/pipeline/transport/_requests_trio.py

@@ -110,7 +110,7 @@ async def __anext__(self):
                     self.iter_content_func,
                 )
             except AttributeError:  # trio < 0.12.1
-                chunk = await trio.run_sync_in_worker_thread(  # pylint: disable=no-member
+                chunk = await trio.run_sync_in_worker_thread(  # type: ignore # pylint: disable=no-member
                     _iterate_response_content,
                     self.iter_content_func,
                 )
@@ -247,7 +247,7 @@ async def send(self, request, **kwargs: Any):  # pylint:disable=invalid-overridd
                     limiter=trio_limiter,
                 )
             except AttributeError:  # trio < 0.12.1
-                response = await trio.run_sync_in_worker_thread(  # pylint: disable=no-member
+                response = await trio.run_sync_in_worker_thread(  # type: ignore # pylint: disable=no-member
                     functools.partial(
                         self.session.request,
                         request.method,