fix test_new_from_file_crafted_executable for m1 (#26009)

* fix test_new_from_file_crafted_executable for m1

* re-add old assert/comment, but disable for aarch64

runtime/src/append_vec.rs

@@ -879,15 +879,21 @@ pub mod tests {
         let accounts = av.accounts(0);
         let account = accounts.first().unwrap();
 
+        // upper 7-bits are not 0, so sanitization should fail
+        assert!(!account.sanitize_executable());
+
         // we can observe crafted value by ref
         {
             let executable_bool: &bool = &account.account_meta.executable;
             // Depending on use, *executable_bool can be truthy or falsy due to direct memory manipulation
             // assert_eq! thinks *executable_bool is equal to false but the if condition thinks it's not, contradictorily.
             assert!(!*executable_bool);
-            const FALSE: bool = false; // keep clippy happy
-            if *executable_bool == FALSE {
-                panic!("This didn't occur if this test passed.");
+            #[cfg(not(target_arch = "aarch64"))]
+            {
+                const FALSE: bool = false; // keep clippy happy
+                if *executable_bool == FALSE {
+                    panic!("This didn't occur if this test passed.");
+                }
             }
             assert_eq!(*account.ref_executable_byte(), crafted_executable);
         }