fix: save followers/following visibility (#8276)

packages/client/src/pages/settings/privacy.vue

@@ -8,7 +8,7 @@
 		<template #caption>{{ $ts.makeReactionsPublicDescription }}</template>
 	</FormSwitch>
 		
-	<FormSelect v-model="ffVisibility" class="_formBlock">
+	<FormSelect v-model="ffVisibility" class="_formBlock" @update:modelValue="save()">
 		<template #label>{{ $ts.ffVisibility }}</template>
 		<option value="public">{{ $ts._ffVisibility.public }}</option>
 		<option value="followers">{{ $ts._ffVisibility.followers }}</option>