Can't infer serializer for PurePosixPath subclass since 0.14.2

[davetapley]

Since 0.14.2 (aka #486) this:

from pathlib import PurePosixPath

from serde import to_dict

class SubPath(PurePosixPath):
    ...

if __name__ == '__main__':
    s = SubPath('a', 'b')
    to_dict(s)

Throws:

serde.compat.SerdeError: Unsupported type: SubPath

I assume that's a regression since #360 implies it should work (and it worked prior to 0.14.2).

---

Note deserialization still works, and can workaround with explicit casting, e.g.:

    d = to_dict(PurePosixPath(s))
    print(from_dict(Sensor, d))

It also only seems to effect PurePosixPath, not other builtins, e.g. these work as expected:

from email.message import EmailMessage

class SubStr(str):
    ...
class SubEmail(EmailMessage):
    ...

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Note also changes to pathlib between Python 3.11 and 3.12 which I learned about here, but that doesn't appear to be related. I can reproduce the error on both 3.11 and 3.12.