[Oxfordshire] Add internal referral status for templates

[MorayMySoc]

Widen filtering for states for Oxfordshire to include internal referral

https://mysocietysupport.freshdesk.com/a/tickets/6334

[skip changelog]

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.65%. Comparing base (70da206) to head (7eb3ffb).
⚠️ Report is 28 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5758      +/-   ##
==========================================
- Coverage   82.65%   82.65%   -0.01%     
==========================================
  Files         455      455              
  Lines       35538    35538              
  Branches     5787     5787              
==========================================
- Hits        29374    29373       -1     
- Misses       4473     4474       +1     
  Partials     1691     1691              

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