NEXT-00000 - Fix missing module error

[akf-bw]

1. Why is this change necessary?

• When the media folder overview is loaded and a module for a media folder is missing, an error occurs because it does not currently check whether the module exists before accessing it

2. What does this change do, exactly?

• Changed sw-media-folder-item/index to check if the module exists before accessing it

3. Describe each step to reproduce the issue or behaviour.

• Open the media folder overview with a missing module -> Error because the script is trying to access the manifest prop of the missing module

4. Please link to the relevant issues (if any).

• /

5. Checklist

• I have rebased my changes to remove merge conflicts
• I have written tests and verified that they fail without my change
• I have created a changelog file with all necessary information about my changes
• I have written or adjusted the documentation according to my changes
• This change has comments for package types, values, functions, and non-obvious lines of code
• I have read the contribution requirements and fulfil them.