styled raw input: make name property optional

src/lib/StyledRawInput.svelte

@@ -5,9 +5,10 @@
 		type InputValidatorEvent,
 		type ValidatorOptions
 	} from '@svelte-toolkit/validate';
+	import { generateIdentifier } from './util.js';
 
 	type $Props = Omit<HTMLInputAttributes, 'name' | 'value'> & {
-		name: string;
+		name?: string;
 		value?: string;
 		validate?: ValidatorOptions;
 		ref?: HTMLInputElement | null;
@@ -15,6 +16,7 @@
 	};
 
 	let {
+		id = generateIdentifier('styled-raw-input'),
 		name,
 		value = $bindable(''),
 		placeholder,
@@ -35,7 +37,7 @@
 </script>
 
 <input
-	id={name}
+	{id}
 	{name}
 	{placeholder}
 	aria-label={placeholder}