[Android/IOS - WEB view only] Vacation - UI is broken when user focus on Vacation message or scrolling it

[QuangHoang1210]

ENV:

• Device: Mobile
• Browser: Chrome / Firefox / Safari
• ENV: tmail.linagora.com [0.11.3-patch4-9]

Step: 1, User go to Vacation mode to setting 2, Focus on Vacation message 3, User typing something and scrolling it up

Actual:

• UI is broken, vaction message border is disappeared
• Weird black bg is displayed

Expected:

• It should be working normaly

https://github.com/linagora/tmail-flutter/assets/124866146/943d825a-839f-40fd-8c96-5e0ee372db31

https://github.com/linagora/tmail-flutter/assets/124866146/7728de95-8f44-47bf-bd30-58aed7df015a