[SPARK-47239][SQL] Support distinct window function

[zml1206]

What changes were proposed in this pull request?

Support distinct window function when window frame is entire partition frame or
growing frame.
For example,
entire partition frame:

select 
    a, 
    b, 
    count(distinct c) over (partition by a) as cc
from t

growing frame:

select 
    a, 
    b, 
    count(distinct c) over (partition by a order by b) as cc
from t

Why are the changes needed?

Distinct window function is a commonly used function and is supported by many SQL engines, such as hive, impala, clickhouse, and presto.

Does this PR introduce any user-facing change?

Yes, after this pr, can use dinctinct window function like hive.

How was this patch tested?

UT.

Was this patch authored or co-authored using generative AI tooling?

No.

[zml1206]

cc @cloud-fan What do you think of this feature?

[github-actions]

We're closing this PR because it hasn't been updated in a while. This isn't a judgement on the merit of the PR in any way. It's just a way of keeping the PR queue manageable.
If you'd like to revive this PR, please reopen it and ask a committer to remove the Stale tag!