The subclass of `dict` is not respected on `>=2024.11.0`

**Describe the issue**:
The subclass is not respected. I noticed the issue on subclass of `dict`, not sure if it's more general. See below for details.

**Minimal Complete Verifiable Example**:

```python
from dask.distributed import Client, as_completed

class TestDict(dict):
def __init__(self, **kwargs):
super().__init__(**kwargs)

def __getattr__(self, key: str):
""" Allow access to items as attributes. """
v = self.get(key, self)
if v is self:
raise AttributeError("has no attribute '{}'".format(key))
return v

def __repr__(self) -> str:
return "(TestDict{})".format(super().__repr__())

def test_subclass(test_dict):
print(f'input type {type(test_dict)}')
print(f'get val {test_dict.a}')
return 0

def main():
client = Client()
test_dict = TestDict(a=1)
futures = [client.submit(test_subclass, test_dict)]
for f in as_completed(futures):
res = f.result()
print(f"result {res}")

if __name__ == "__main__":
main()
```

**Anything else we need to know?**:

The test code works as expected on `<2024.11.0`, which outputs
```
input type
get val 1
result 0
```
on `>=2024.11.0` outputs
```
input type
2024-11-13 05:01:36,954 - distributed.worker - ERROR - Compute Failed
Key: test_subclass-e8dd185fef44ec112f057d9b352f913f
State: executing
Task:
Exception: 'AttributeError("\'dict\' object has no attribute \'a\'")'
Traceback: ' File "/home/ubuntu/data/home/ubuntu/test_dask.py", line 20, in test_subclass\n print(f\'get val {test_dict.a}\')\n'

Traceback (most recent call last):
File "/home/ubuntu/data/home/ubuntu/test_dask.py", line 34, in
main()
File "/home/ubuntu/data/home/ubuntu/test_dask.py", line 29, in main
res = f.result()
File "/home/ubuntu/.local/lib/python3.10/site-packages/distributed/client.py", line 402, in result
return self.client.sync(self._result, callback_timeout=timeout)
File "/home/ubuntu/data/home/ubuntu/test_dask.py", line 20, in test_subclass
print(f'get val {test_dict.a}')
```

**Environment**:

- Dask version: `2024.11.0`
- Python version: `3.10`
- Operating System: `ubuntu 22.04`
- Install method (conda, pip, source): `pip`