fix: initialize template oid fields

[itsmostafa]

Fix for initialize oid field func

🗣 Description

From cloudwatch logs in sandbox:

KeyError: 'name'
"$regex": f"^{re.escape(data[unique_field].strip())}$",
File "/var/www/api/manager.py", line 225, in update
template_manager.update(document_id=template["_id"], data=update_data)
File "/var/www/api/initialize.py", line 270, in _duplicate_oid_fields
_duplicate_oid_fields()
File "/var/www/api/initialize.py", line 401, in initialization_tasks
initialization_tasks()
File "/var/www/api/main.py", line 235, in <module>

💭 Motivation and context

🧪 Testing

✅ Pre-approval checklist

• [x] This PR has an informative and human-readable title.
• [x] Changes are limited to a single goal - eschew scope creep!
• [x] All relevant type-of-change labels have been added.
• [x] I have read the CONTRIBUTING document.
• [x] These code changes follow cisagov code standards.
• [x] All relevant repo and/or project documentation has been updated to reflect the changes in this PR.
• [x] Tests have been added and/or modified to cover the changes in this PR.
• [x] All new and existing tests pass.