Revert "Make proxy NumPy arrays pass isinstance check in cudf.pandas"

[Matt711]

Reverts #16286

[mroeschke]

Just documenting some offline observations why we're reverting for now.

1. The cudf-pandas integration tests seem to be failing due to this change. Namely this part of the new proxy base class

    def __array_finalize__(self, obj):
        self._fsproxy_wrapped = getattr(obj, "_fsproxy_wrapped", None)

where obj isn't necessarily always the new proxy base class; therefore, None could be passed into cupy.asarray/cupy.ndarray.get

2. @vyasr expressed some concern about always performing a DTH transfer of the cupy array in __new__

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Please upload report for BASE (branch-24.10@fd44adc). Learn more about missing BASE report.

Files	Patch %	Lines
python/cudf/cudf/pandas/fast_slow_proxy.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@               Coverage Diff               @@
##             branch-24.10   #16586   +/-   ##
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  Coverage                ?   82.97%           
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  Files                   ?      182           
  Lines                   ?    28938           
  Branches                ?        0           
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  Hits                    ?    24012           
  Misses                  ?     4926           
  Partials                ?        0           

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[galipremsagar]

/merge