[datafusion-cli] `shuffle.slt` Intermittent CI failure for `SELECT shuffle([1, 2, 3, 4, 5, NULL]) != [1, 2, 3, 4, 5, NULL];`

[alamb]

Describe the bug

A test in shuffle.slt fails intermittently but passes on rerun

To Reproduce

Here is an example:

https://github.com/apache/datafusion/actions/runs/19022758025/job/54320962649

     Running bin/sqllogictests.rs (target/ci/deps/sqllogictests-3c0c5297e9072553)
External error: 1 errors in file /__w/datafusion/datafusion/datafusion/sqllogictest/test_files/spark/array/shuffle.slt

1. query result mismatch:
[SQL] SELECT shuffle([1, 2, 3, 4, 5, NULL]) != [1, 2, 3, 4, 5, NULL];
[Diff] (-expected|+actual)
-   true
+   false
at /__w/datafusion/datafusion/datafusion/sqllogictest/test_files/spark/array/shuffle.slt:24

Expected behavior

Test should always pass

Additional context

I suspect the issue is that in very rare occasions the two calls to shuffle result in the exact same output

[Jefffrey]

This was something I was concerned about in the original PR; either we implement seed support for the function (#17686) or we disable these flaky tests