Bug: learning material showing "0" in place of the duration.

[serapieTuyishime]

Description

Above the start of the additional learning material page, sometimes there is a "0" that shows in place of the duration.

Environment

• Operating System: macOS Ventura
• Browser and version: Safari 16.5.2
• Any relevant hardware information: iPhone 15

Expected Behaviour

When there is no defined duration for the learning material, there should not be anything displayed

Actual Behaviour

A "0" is displayed, when the specified learning material has no predefined duration.

Steps to Reproduce

• Navigate to Learning module page
• Scroll down under the objectives page, to observe the behavior

Screenshots or Attachments