Set recipient age to either "Adult" or "Youth" only

[2022120011]

workstand-shop-app/src/lib/ui/forms/BikeEditFields.svelte

Lines 32 to 38 in bdb5a62

	<Field name="recipientAge" list="recipient-ages" bind:value={$bikeForm.recipientAge}
	>Recipient Age</Field
	>
	<datalist id="recipient-ages">
	<option value="Adult"></option>
	<option value="Youth"></option>
	</datalist>

The current live version of Workstand shows an empty text field where users can input anything for recipientAge.
Can we change this to force only "Adult" or "Youth" as options?