[Android - WEbview only] Identity Profile - A weird black background is display when keyboard is disappread

[QuangHoang1210]

ENV:

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

Step: 1, User go to Management >> Profile identity 2, User tap on signature to edit one 3, User tap on color / text style 4, User tap to focus on text box

Noted: Issue also happen when user tap on some input field and outfocus it at Profile Identity screen

Actual:

• A weird black background is display above keyboard

Expected:

• It should be not included background displaying above keyboard

https://github.com/linagora/tmail-flutter/assets/124866146/9126a99d-26c9-425e-b28b-7f4f893d9a11