The add/subtract function behaves incorrectly on leap year

[amrocs]

The add/subtract function behaves incorrectly on leap year.

[dayjs 1.11.12]
console.log(dayjs('2023-01-01').add(dayjs.duration(365, 'day')).toDate()); // Mon Jan 01 2024 00:00:00 GMT+0900
console.log(dayjs('2024-01-01').add(dayjs.duration(365, 'day')).toDate()); // Wed Jan 01 2025 00:00:00 GMT+0900 <-- wrong
console.log(dayjs('2025-01-01').add(dayjs.duration(365, 'day')).toDate()); // Thu Jan 01 2026 00:00:00 GMT+0900

console.log(dayjs('2024-01-01').subtract(dayjs.duration(365, 'day')).toDate()); // Sun Jan 01 2023 00:00:00 GMT+0900
console.log(dayjs('2025-01-01').subtract(dayjs.duration(365, 'day')).toDate()); // Mon Jan 01 2024 00:00:00 GMT+0900 <-- wrong
console.log(dayjs('2026-01-01').subtract(dayjs.duration(365, 'day')).toDate()); // Wed Jan 01 2025 00:00:00 GMT+0900

[moment.js]
console.log(moment('2023-01-01').add(moment.duration(365, 'day')).toDate()); // Mon Jan 01 2024 00:00:00 GMT+0900
console.log(moment('2024-01-01').add(moment.duration(365, 'day')).toDate()); // Tue Dec 31 2024 00:00:00 GMT+0900 <-- correct
console.log(moment('2025-01-01').add(moment.duration(365, 'day')).toDate()); // Wed Jan 01 2025 00:00:00 GMT+0900

console.log(moment('2024-01-01').subtract(moment.duration(365, 'day')).toDate()); // Sun Jan 01 2023 00:00:00 GMT+0900
console.log(moment('2025-01-01').subtract(moment.duration(365, 'day')).toDate()); // Tue Jan 02 2024 00:00:00 GMT+0900 <-- correct
console.log(moment('2026-01-01').subtract(moment.duration(365, 'day')).toDate()); // Wed Jan 01 2025 00:00:00 GMT+0900

Information

• Day.js Version: v1.11.12
• OS: Windows 10
• Browser: chrome 126
• Time zone: GMT+0900 (日本標準時)