feat: lock AddTask dialog

[shatyuka]

Description

Prevent from accidental close.

Related Issues

None

Checklist:

• Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• Have you linted your code locally prior to submission?
• Have you successfully ran app with your changes locally?

[agalwood]

Hi, Long time no see 😃

My idea is that when there is uri content in the addTask input box and the close button is clicked, would it be better to pop up a confirm for the user to choose? Because addTask will automatically read the resource link in the clipboard when it is opened, if I want to close the addTask dialog box, I need to delete the url content before closing it, which is a bit troublesome.

[shatyuka]

Sorry for the misleading. Only modal area will be locked.