chore: Simplify approach to avoiding memory corruption due to buffer reuse (#2156)

Author: andygrove

native/core/Cargo.toml

@@ -119,7 +119,3 @@ harness = false
 [[bench]]
 name = "parquet_decode"
 harness = false
-
-[[bench]]
-name = "filter"
-harness = false

native/core/benches/filter.rs

@@ -245,7 +245,7 @@ impl RecordBatchStream for CopyStream {
 }
 
 /// Copy an Arrow Array
-fn copy_array(array: &dyn Array) -> ArrayRef {
+pub(crate) fn copy_array(array: &dyn Array) -> ArrayRef {
     let capacity = array.len();
     let data = array.to_data();