Shrinking issue with Select and flex-basis

[Arucard89]

After making improvements to the way content is displayed in the Select component(in that PR), we discovered unpredictable behaviour related to the use of the parent container's flex-basis property.

<div style={{display: 'flex'}}>
    <div style={{flexBasis: '0'}}>
        <Select
            {...selectProps}
            label="some label"
            placeholder="some placeholder"
        >
            {children}
        </Select>
    </div>
</div>

Therefore, it was decided to move these changes to the major version of the library due to their breaking behaviour in some current use-cases.