add a utility to locate the corresponding country given a phone number dropdown display value

[kamarmack]

const [flagEmoji] = e.target.value.split(' '); // get the flag emoji, e.g. "🇸🇬"
						const selectedCountry = flagEmoji
							? countries.find((country) => country.flag_emoji === flagEmoji)
							: null;
						if (selectedCountry) {
							setPhoneNumberCountry(() => selectedCountry);
							const phoneNumberRegion = selectedCountry.two_letter_country_code;
							localStorage.setItem('phoneNumberRegion', phoneNumberRegion);
						}