Fix tests against dodal change

[jacob720]

Fixes our tests against DiamondLightSource/dodal#1971

Instructions to reviewer on how to test:

1. Do thing x
2. Confirm thing y happens

Checks for reviewer

• Would the PR title make sense to a user on a set of release notes

[github-actions]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.95%. Comparing base (023dda5) to head (d3cd5c1).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1676   +/-   ##
=======================================
  Coverage   92.95%   92.95%           
=======================================
  Files         157      157           
  Lines        8592     8592           
=======================================
  Hits         7987     7987           
  Misses        605      605           

Components	Coverage Δ
i24 SSX	77.32% <100.00%> (ø)
hyperion	98.60% <100.00%> (ø)
other	98.34% <100.00%> (ø)

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[rtuck99]

Approved