Extentions >>> Manage ... fails with Hathor admin Template

[Webdongle]

Steps to reproduce the issue

Set the admin Template to Hathor
Navigate to Extentions >>> Manage

Expected result

The module manager should display

Actual result

Error 500
"Layout default_batch not found."

System information (as much as possible)

Additional comments

[brianteeman]

Closed as a duplicate report if something we already have a pull request for #12412
Please test that PR

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