API attachment update can result in a Undefined array key "name" error #5353

Describe the Bug

Performing an API attachment update following the API docs can result in a Undefined array key "name" error.
This is because the name is not required for validation, but assumed to be set in the called service:

Steps to Reproduce

1. Perform API attachment update call without a name parameter.
2. See 500 error

Expected Behaviour

API call succeeds and no error thrown.

Screenshots or Additional Context

No response

Browser Details

No response

Exact BookStack Version

v24.10.3