fix: resolve issue with secret input saving additional data (#6196)

#### What type of PR is this?

/kind bug
/area ui
/milestone 2.17.x

#### What this PR does / why we need it:

修复 Secret Input 保存之后会多出 Secret Form 中数据的问题。

#### Which issue(s) this PR fixes:

Fixes #6193 

#### Special notes for your reviewer:

测试方式：

1. 在保存 Secret 的表单选项前，打开一次编辑 Secret 的对话框。
2. 保存数据，检查内容是否多出了其他数据。

#### Does this PR introduce a user-facing change?

```release-note
None
```

ui/src/formkit/inputs/secret/components/SecretForm.vue

@@ -34,6 +34,7 @@ function onSubmit(data: SecretFormState) {
     type="form"
     :model-value="defaultValue"
     name="secret-form"
+    ignore
     :config="{ validationVisibility: 'submit' }"
     @submit="onSubmit"
   >