Wrong date/time of a conversation when a draft message is deleted

[antodc]

Checklist

• [X] I can reproduce the bug with the latest version given here.
• [X] I made sure that there are no existing issues - open or closed - to which I could contribute my information.
• [X] I made sure that there are no existing discussions - open or closed - to which I could contribute my information.
• [X] I have read the FAQs inside the app (Menu -> About -> FAQs) and my problem isn't listed.
• [X] I have taken the time to fill in all the required details. I understand that the bug report will be dismissed otherwise.
• [X] This issue contains only one bug.
• [X] I have read and understood the contribution guidelines.

Affected app version

1.0.1

Affected Android/Custom ROM version

Android 11

Affected device model

Oscar C60

How did you install the app?

GitHub releases

Steps to reproduce the bug

1. Go to a conversation and start writing a new message
2. Exit the conversation without sending the new message
3. The conversation appears as having a draft and after a few seconds it appears as having the date/time the draft message was written
4. Go back to the conversation and delete the draft message
5. The new date/time is kep for the conversation, even if the last message actually sent/received is much older

Expected behavior

The conversation should appear with the date/time of the last message sent/received

Actual behavior

The date/time of the deleted draft message is kept

Screenshots/Screen recordings

No response

Additional information

Maybe related to #13