reverse on a binary column fails with a native UTF-8 error on Spark 4.2

[andygrove]

Describe the bug

Spark 4.2 added BinaryType to the input types of Reverse: reverse(b) on a binary column reverses its bytes and returns binary. Spark 4.1 and earlier cast the binary to a string first. CometReverse sends every argument that is not an array to the native string reverse, so on Spark 4.2 a reverse of a binary column in a native plan fails the query:

org.apache.comet.CometNativeException: Invalid argument error: Encountered non UTF-8 data: invalid utf-8 sequence of 1 bytes from index 0

Steps to reproduce

On main at 9f68a41, built with -Pspark-4.2:

CREATE TABLE t(b binary) USING parquet;
INSERT INTO t VALUES (X'CAFE'), (X''), (NULL), (X'01');
SELECT reverse(b) FROM t;

Expected behavior

Each value's bytes reversed, as Spark returns them: X'FECA', X'', NULL, X'01'.

Additional context

Spark's own DataFrameFunctionsSuite test reverse function - binary, new in 4.2, hits this only once its DataFrame is cached in Comet's format (#5634). Its input is a local relation, which Comet does not otherwise run natively.