Hide "X" button on Tabs

[eduardomozart]

Describe the bug
It's not a bug, but an improvement suggestion. When using two WhatsApp accounts, switching between them with the "X" button make it easier to close and have to scan the QR code again. But when using WhatsApp Business it's required to request to the owner of the phone to scan the QR code, so having those button visible make it easier to click on it unintentionally and give a headache for multiple account owners.

To Reproduce
Steps to reproduce the behavior:

1. Open Altus.
2. Create an account.
3. Create a second account.

Expected behavior
A clear and concise description of what you expected to happen: It would be great if the Settings button allows to hide the Close button so users doesn't close it unexpectedly or make it available as a right click option to close the tab instead of the "X" button at the right of the tab.

Screenshots
If applicable, add screenshots to help explain your problem:

Information:
Version Info (Go to About > About and click "Copy Version Info"): 4.8.6

Additional context
Add any other context about the problem here.