1998 fix smargon combined moves

[rtuck99]

Fixes

• Smargon combined moves should perform omega moves separately dodal#1998

Requires:

• Support for mod-360 omega #1640

Link to dodal PR (if required):

• Fix for smargon combined moves with current slow-smargon workaround dodal#1999
  (remember to update pyproject.toml with the dodal commit tag if you need it for tests to pass!)

This removes omega from CombinedMove because a) omega moves cannot be reliably parallelised with other axes and b) following mod-360 changes, we wish to apply a phase angle and not an absolute angle which is inconsistent with the other axes in CombinedMove
Instead, when we perform a combined move, the plan explicitly moves the omega axis beforehand

Instructions to reviewer on how to test:

1. Tests pass
2. Functionality as described

Checks for reviewer

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

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.89%. Comparing base (93b2fde) to head (86ca2b1).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1692   +/-   ##
=======================================
  Coverage   92.89%   92.89%           
=======================================
  Files         159      159           
  Lines        8678     8679    +1     
=======================================
+ Hits         8061     8062    +1     
  Misses        617      617           

Components	Coverage Δ
i24 SSX	77.15% <ø> (ø)
hyperion	98.73% <100.00%> (ø)
other	98.18% <100.00%> (+<0.01%)	⬆️

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[noemifrisina]

lgtm, thanks