RN: v1.25.1 (and earlier) fail to show channel as Unread when posts are marked Unread on the latest webapp

Description

Environment: iOS app1.25.1 (build 247), Webapp community-release 5.18.104

Steps:
1) Load 1.25.1 version of the app on your device and log in
3) Select a post and mark as Unread on the latest community-release server on the webapp
4) Verify the same post on the mobile

Expected: The post/channel displays as unread.

Actual: Error banner is present on the mobile app `Refreshing messages failed. Pull up to try again.`
Pulling up and refreshing clears the banner, but does not show the post or channel as unread.

QA Test Steps

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Status

Mana

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Assignee

Unassigned

QA Assignee

Jelena Gilliam

Reporter

Jelena Gilliam

Epic Link

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Mattermost Team

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