feat(a11y): use autocomplete='new-password' on register form

Adds autocomplete prop to Password component (defaults to
'current-password'). Register page passes 'new-password' so
password managers offer to generate a strong password.

Fixes WCAG 1.3.5 (Identify Input Purpose).

frontend/src/components/input/Password.vue

@@ -7,7 +7,7 @@
 			:placeholder="$t('user.auth.passwordPlaceholder')"
 			required
 			:type="passwordFieldType"
-			autocomplete="current-password"
+			:autocomplete="autocomplete"
 			:tabindex="tabindex"
 			@keyup.enter="e => $emit('submit', e)"
 			@focusout="() => {validate(); validateAfterFirst = true}"
@@ -44,9 +44,11 @@ const props = withDefaults(defineProps<{
 	// This prop is a workaround to trigger validation from the outside when the user never had focus in the input.
 	validateInitially?: boolean,
 	validateMinLength?: boolean,
+	autocomplete?: string,
 }>(), {
 	tabindex: undefined,
 	validateMinLength: true,
+	autocomplete: 'current-password',
 })
 
 const emit = defineEmits<{

frontend/src/views/user/Register.vue

@@ -47,6 +47,7 @@
 				>{{ $t('user.auth.password') }}</label>
 				<Password
 					:validate-initially="validatePasswordInitially"
+					autocomplete="new-password"
 					@submit="submit"
 					@update:modelValue="v => credentials.password = v"
 				/>