Closes#7906
Modified the two children(`TextInputV2` and `CountrySelect`) in the
`StyledHalfRowContainer` component to always be equal in size and divide
the available space equally.
The `StyledIconChevronDown` component has a `flex-shrink: 0` to prevent
it from completely disappearing. The same applies for the
`selectedOption.Icon`.
A `p` tag had to be added to the label to correctly handle the text
overflow.
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Co-authored-by: Devessier <baptiste@devessier.fr>
ca54bc1813