Input: fix show password cursor (ElemeFE#20870)

Author: cs1707

packages/input/src/input.vue

@@ -403,7 +403,9 @@
       },
       handlePasswordVisible() {
         this.passwordVisible = !this.passwordVisible;
-        this.focus();
+        this.$nextTick(() => {
+          this.focus();
+        });
       },
       getInput() {
         return this.$refs.input || this.$refs.textarea;