"Push Notification Contents" not available in the system console without a license

Description

This is a regression in 5.12.

Steps to repro:
1. Log on as sysadmin to a server that does not have a license.
2. Go to System Console > Site Configuration > Notifications.
3. Notice that "Push Notification Contents" is not listed.
4. Go to System Console > About > Edition and License and add a license key.
5. Go back to System Console > Site Configuration > Notifications.
6. Notice that "Push Notification Contents" is listed.

QA Test Steps

Steps as per description.

Reporter

None

Status

Mana

None

Assignee

Martin Kraft

QA Assignee

Linda Mitchell

Reporter

Miguel Alatzar

Epic Link

None

Mattermost Team

Sustained Engineering

Sprint

None

Labels

QA Testing Areas

System Console

GitHub Issue

None

Components

None
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