Wrong ms conversion

Getting issue with parse datetime
created small unit test to show the issue

```javascript
const ds = '2024-11-18T02:04:48.19';
expect(dayjs(ds).valueOf()).toEqual(new Date(ds).valueOf());
// error: Expected 1731913488019 to equal 1731913488190.
```

Start with the supplied unit test and the Day.js parsing path for the timestamp `2024-11-18T02:04:48.19`; compare its millisecond handling with native `Date`. Done means the test passes and `dayjs(ds).valueOf()` matches `new Date(ds).valueOf()` for this case.

Written by the indexing model from the issue text.