test: add test for #1855 (#3588)

Author: so1ve

packages/vue-test-workspace/vue-tsc/non-strict-template/#1855/Comp.vue

@@ -0,0 +1,6 @@
+<script setup lang="ts">
+const emit = defineEmits<{
+	(e: 'event-any', arg: any): void;
+	(e: 'event-str', arg: string): void;
+}>();
+</script>

packages/vue-test-workspace/vue-tsc/non-strict-template/#1855/main.vue

@@ -0,0 +1,8 @@
+<script setup lang="ts">
+import { exactType } from 'vue-tsc/shared';
+import Comp from './Comp.vue';
+</script>
+
+<template>
+	<Comp @event-str="s => exactType(s, '' as string)" @event-any="a => exactType(a, {} as any)" />
+</template>