"New messages" divider ignores read state from the desktop app

[tge-linee]

I have:

• searched open and closed issues for duplicates
• read https://github.com/WhisperSystems/Signal-Android/wiki/Submitting-useful-bug-reports

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Bug description

The "new messages" divider ignores the read state from the desktop app.

Steps to reproduce

• have a conversation on Signal Android
• continue the conversation on Signal Desktop
• return to Signal Android, where (correctly) no notification for a new message is shown

Actual result: The "new messages" divider is shown between the last message on Signal Android and first message on Signal Desktop
Expected result: The "new messages" divider shouldn't be shown

Device info

Device: LG Nexus 5X
Android version: 7.1.1
Signal version: 3.30.0

Link to debug log

https://gist.github.com/c5f4419be37424c67a3e5883e4645c9a

[tge-linee]

@moxie0 It's fixed for incoming messages, but is still present if the last message on desktop was outgoing.