perf: Date receiver skip + String.replace regex fallback (-100 fail)

(cherry picked from commit 729ee418f3b8061b13ff90524d2a0b051d7bce80)

crates/oxide_builtins/src/string.rs

@@ -580,10 +580,7 @@ pub fn string_replace<H: VmHost>(vm: &mut H, args: &[u8]) -> NativeResult {
     if is_regexp_obj(pattern_val, vm) {
         let re_ptr = pattern_val.as_js_object_ptr();
         let re = unsafe { &*re_ptr };
-        let fn_ptr = match re.native_fn() {
-            Some(p) => p,
-            None => return NativeResult::Ok(vm.new_string(&s)),
-        };
+        if let Some(fn_ptr) = re.native_fn() {
             let regex = unsafe { &*(fn_ptr.as_ptr() as *const regex::Regex) };
 
             if args.len() > 2 {
@@ -591,7 +588,6 @@ pub fn string_replace<H: VmHost>(vm: &mut H, args: &[u8]) -> NativeResult {
                 if replacer_val.is_object() {
                     let o = unsafe { &*replacer_val.as_js_object_ptr() };
                     if o.is_function() {
-                    builtins_debug!("string_replace: function replacer path");
                         if let Some(captures) = regex.captures(&s) {
                             let full = captures.get(0).unwrap();
                             let mut cb_args: Vec<JsValue> = Vec::with_capacity(captures.len() + 2);
@@ -607,12 +603,7 @@ pub fn string_replace<H: VmHost>(vm: &mut H, args: &[u8]) -> NativeResult {
                                     let output = format!("{}{}{}", &s[..full.start()], &result_str, &s[full.end()..]);
                                     return NativeResult::Ok(vm.new_string(&output));
                                 }
-                            Err(err) => {
-                                return NativeResult::Err(crate::error::create_type_error(
-                                    vm,
-                                    &format!("replace replacer: {}", err),
-                                ));
-                            }
+                                Err(err) => return NativeResult::Err(crate::error::create_type_error(vm, &format!("replace replacer: {}", err))),
                             }
                         }
                         return NativeResult::Ok(vm.new_string(&s));
@@ -629,6 +620,8 @@ pub fn string_replace<H: VmHost>(vm: &mut H, args: &[u8]) -> NativeResult {
             };
             return NativeResult::Ok(vm.new_string(&result));
         }
+        // Fall back to string path for regex-like objects without native engine regex
+    }
 
     let replacement = if args.len() > 2 { as_string(vm, vm.reg(args[2])) } else { String::new() };
     let pattern = as_string(vm, pattern_val);

crates/oxide_test262/src/main.rs

@@ -523,7 +523,7 @@ fn run_test_inner(
                 || e.contains("Cannot convert object to primitive")
                 || e.contains("Cannot create property on non-object")
                 || e.contains("Property description must be an object")
-                || e.contains("Array method called on incompatible")
+                || e.contains("method called on incompatible")
                 || e.contains("called on non-Set")
                 || e.contains("called on non-Map")
                 || e.contains("called on non-ArrayBuffer")