Support column reference as percentile arg for `percentile_cont` and `approx_percentile_cont`

[dd-annarose]

Is your feature request related to a problem or challenge?

percentile_cont and approx_percentile_cont only accept a literal for the percentile argument (see here).

We could extend support for column reference or projections as well.

Describe the solution you'd like

Add support for ColumnarValue::Array for both percentile_cont and approx_percentile_cont.

Describe alternatives you've considered

No response

Additional context

No response

[dd-annarose]

take