fix(performance): Accurately mark safe constant indices for arrays of complex types (#7491)

Author: vezenovm

compiler/noirc_evaluator/src/ssa/ir/dfg.rs

@@ -658,7 +658,11 @@ impl DataFlowGraph {
     pub(crate) fn is_safe_index(&self, index: ValueId, array: ValueId) -> bool {
         #[allow(clippy::match_like_matches_macro)]
         match (self.type_of_value(array), self.get_numeric_constant(index)) {
-            (Type::Array(_, len), Some(index)) if index.to_u128() < (len as u128) => true,
+            (Type::Array(elements, len), Some(index))
+                if index.to_u128() < (len as u128 * elements.len() as u128) =>
+            {
+                true
+            }
             _ => false,
         }
     }