fix: support literal sha2() with 'Unsupported argument types' #3466
+451
−1
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Which issue does this PR close?
Closes #3340
part of #3328
Rationale for this change
When Spark's ConstantFolding optimizer rule is disabled, an all-literal sha2('test', 256) call reaches the native engine as ScalarValue arguments.
What changes are included in this PR?
Added a dedicated scalar execution path to handle literal inputs, preventing crashes when ConstantFolding is disabled.
How are these changes tested?
cargo test -p datafusion-comet-spark-expr hash_funcs::sha2::tests