refactor(client): use composition api

packages/client/src/components/remote-caution.vue

@@ -2,22 +2,10 @@
 <div class="jmgmzlwq _block"><i class="fas fa-exclamation-triangle" style="margin-right: 8px;"></i>{{ $ts.remoteUserCaution }}<a :href="href" rel="nofollow noopener" target="_blank">{{ $ts.showOnRemote }}</a></div>
 </template>
 
-<script lang="ts">
-import { defineComponent } from 'vue';
-import * as os from '@/os';
-
-export default defineComponent({
-	props: {
-		href: {
-			type: String,
-			required: true
-		},
-	},
-	data() {
-		return {
-		};
-	}
-});
+<script lang="ts" setup>
+defineProps<{
+	href: string;
+}>();
 </script>
 
 <style lang="scss" scoped>