Mobile Web: Extra divider in dot menu

Description

Repros on the mark-as-unread branch, but not on master or any release branch

Repro steps:
1) Shrink the window until it goes into mobile view
2) Open the ... menu for any post

Observed: There's an extra divider line between two of the options


Expected: There's no extra divider line between those options

QA Test Steps

See description

Status

Mana

2

Assignee

Harrison Healey

QA Assignee

None

Reporter

Harrison Healey

Epic Link

Fix versions

None

Mattermost Team

Apps

Sprint

Labels

None

QA Testing Areas

Mobile - Classic

GitHub Issue

None

Components

None
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