Added isMulti on AsyncSelect and Async (loadOptions) doesn't work

Hi,

First : thank you so much for this package!

When I added isMulti on the AsyncSelect, I don't see the different options loaded, always empty:

import AsyncSelect from 'react-select/async';

...

const loadOptions = async (inputValue, callback) => {
    let data = await axios.get(route('dashboard.tags.searchTag'), { params: { name: inputValue } }).then((response) => {
        const options = [];

        response.data.data.forEach((item) => {
            options.push(item);
        });

        return options;
    });

    callback(data);
};

...

<AsyncSelect
    isMulti
    value={post.tags}
    onChange={handleChange}
    loadOptions={loadOptions}
    getOptionLabel={(option) => option.name}
/>

Without isMulti on AsyncSelect, I see the different options:

I used "react-select": "^5.6.0"

Start at the AsyncSelect entry point and reproduce the reported example with isMulti, value, loadOptions, and getOptionLabel. Compare the behavior with and without isMulti using the supplied loadOptions implementation. Done means the asynchronously loaded options appear when isMulti is enabled as well as when it is omitted.