Fix Spark `slice` function `Null` type to `GenericListArray` casting issue

[erenavsarogullari]

Describe the bug

Currently, Spark slice function accepts Null Arrays and return Null for this particular queries. DataFusion-Spark slice function also needs to return NULL when Null Array is set.
Spark Behavior (tested with latest Spark master):

> SELECT slice(NULL, 1, 2);
+-----------------+
|slice(NULL, 1, 2)|
+-----------------+
|             null|
+-----------------+

DF Behaviour:
Current:

query error
SELECT slice(NULL, 1, 2);
----
DataFusion error: Internal error: could not cast array of type Null to arrow_array::array::list_array::GenericListArray<i32>.
This issue was likely caused by a bug in DataFusion's code. Please help us to resolve this by filing a bug report in our issue tracker: https://github.com/apache/datafusion/issues

New:

query ?
SELECT slice(NULL, 1, 2);
----
NULL

To Reproduce

Explained under description section.

Expected behavior

Explained under description section.

Additional context

No response

[erenavsarogullari]

take