fix: use new implementation of sha256 for array_dynamic_blackbox_input test

test_programs/execution_success/array_dynamic_blackbox_input/Prover.toml

@@ -0,0 +1,4 @@
+index = "1"
+leaf = ["51", "109", "224", "175", "60", "42", "79", "222", "117", "255", "174", "79", "126", "242", "74", "34", "100", "35", "20", "200", "109", "89", "191", "219", "41", "10", "118", "217", "165", "224", "215", "109"]
+path = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30", "31", "32", "33", "34", "35", "36", "37", "38", "39", "40", "41", "42", "43", "44", "45", "46", "47", "48", "49", "50", "51", "52", "53", "54", "55", "56", "57", "58", "59", "60", "61", "62", "63"]
+root = [79, 230, 126, 184, 98, 125, 226, 58, 117, 45, 140, 15, 72, 118, 89, 173, 117, 161, 166, 0, 214, 125, 13, 16, 113, 81, 173, 156, 97, 15, 57, 216]

test_programs/execution_success/array_dynamic_blackbox_input/src/main.nr

@@ -0,0 +1,27 @@
+fn main(leaf: [u8; 32], path: [u8; 64], index: u32, root: [u8; 32]) {
+    compute_root(leaf, path, index, root);
+}
+
+fn compute_root(leaf: [u8; 32], path: [u8; 64], _index: u32, root: [u8; 32]) {
+    let mut current = leaf;
+    let mut index = _index;
+
+    for i in 0..2 {
+        let mut hash_input = [0; 64];
+        let offset = i * 32;
+        let is_right = (index & 1) != 0;
+        let a = if is_right { 32 } else { 0 };
+        let b = if is_right { 0 } else { 32 };
+
+        for j in 0..32 {
+            hash_input[j + a] = current[j];
+            hash_input[j + b] = path[offset + j];
+        }
+
+        current = dep::std::sha256::digest(hash_input);
+        index = index >> 1;
+    }
+
+    // Regression for issue #4258
+    assert(root == current);
+}