Ui/Api : Allow updating "Read Instance settings from OVA" true/false

### The required feature described as a wish

As a User/Admin/Operator I would like to have the ability to change template property

Steps to reproduce the issue

1. Register the template with "Read Instance settings from OVA"

2. Try to edit the template , there is no option to disable the "Read Instance settings from OVA""

If there are no instances deployed from the Template, Admin/User should be allowed to change the Template setting “Read Instance settings from OVA”

首先追蹤範本編輯 UI 以及對 “Read Instance settings from OVA” 屬性的 API 處理，以註冊流程作為其目前行為的參考。當沒有執行個體使用該範本時，可以在 UI 和 API 中修改此設定，同時在存在執行個體時保留該限制，即視為完成。

由索引模型根據 Issue 內容生成。