Org administrator missing catchment assignment after template application

[himeshr]

Describe the bug
After applying a template, the organisation administrator user does not have a catchment automatically assigned. This creates a mandatory configuration requirement before users can attempt sync or DEA create/update operations.

Steps to reproduce:

1. Apply any template to an organisation
2. Check the administrator user's catchment assignment
3. Observe that no catchment is configured

Expected behavior: Administrator should have a catchment automatically assigned based on the template configuration.

Category: Bug
Priority: High

Additional context
Add any other context about the problem here.

Developer Checklist(Developer fixing the bug should fill this checklist)

• Does the fix require extensive regression testing?
  • Yes
  • No
• Are you mentioning the required scenarios that could be affected?
  • Yes
  • No