[REVIEW] Fix issue with set-item incase of list and struct types

[galipremsagar]

Description

Fixes: #11721
This PR:

• Fixes: [BUG] Unable to perform setitem operations on slices of struct and list columns #11721, by not going through the fill & fill_inplace APIs which don't support struct and list columns.
• Fixes an issue in caching while constructing a struct or list scalar as list & dict objects are not hashable and we were running into the following errors:

In [9]: i = cudf.Scalar([10, 11])
---------------------------------------------------------------------------
KeyError                                  Traceback (most recent call last)
File /nvme/0/pgali/envs/cudfdev/lib/python3.9/site-packages/cudf/core/scalar.py:51, in CachedScalarInstanceMeta.__call__(self, value, dtype)
     49 try:
     50     # try retrieving an instance from the cache:
---> 51     self.__instances.move_to_end(cache_key)
     52     return self.__instances[cache_key]

KeyError: ([10, 11], <class 'list'>, None, <class 'NoneType'>)

During handling of the above exception, another exception occurred:

TypeError                                 Traceback (most recent call last)
Cell In [9], line 1
----> 1 i = cudf.Scalar([10, 11])

File /nvme/0/pgali/envs/cudfdev/lib/python3.9/site-packages/cudf/core/scalar.py:57, in CachedScalarInstanceMeta.__call__(self, value, dtype)
     53 except KeyError:
     54     # if an instance couldn't be found in the cache,
     55     # construct it and add to cache:
     56     obj = super().__call__(value, dtype=dtype)
---> 57     self.__instances[cache_key] = obj
     58     if len(self.__instances) > self.__maxsize:
     59         self.__instances.popitem(last=False)

TypeError: unhashable type: 'list'

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

[codecov]

Codecov Report

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Additional details and impacted files

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[galipremsagar]

@gpucibot merge