types: add onClick event shim (#8665)

src/utils/with-install.ts

@@ -1,9 +1,18 @@
 import { App } from 'vue';
 import { camelize } from './format/string';
 
+// https://github.com/youzan/vant/issues/8302
+type EventShim = {
+  new (...args: any[]): {
+    $props: {
+      onClick?: (...args: any[]) => void;
+    };
+  };
+};
+
 export type WithInstall<T> = T & {
   install(app: App): void;
-};
+} & EventShim;
 
 // using any here because tsc will generate some weird results when using generics
 export function withInstall<T>(options: any): WithInstall<T> {