Fix for smargon combined moves with current slow-smargon workaround

[rtuck99]

Fixes

• Smargon combined moves should perform omega moves separately #1998

Requires:

• Support for mod-360 omega #1929

This removes support for omega in CombinedMove as described in the accompanying mx-bluesky PR

See also mx-bluesky PR

• 1998 fix smargon combined moves mx-bluesky#1692

Instructions to reviewer on how to test:

1. Tests pass

Checks for reviewer

• Would the PR title make sense to a scientist on a set of release notes
• If a new device has been added does it follow the standards
• If changing the API for a pre-existing device, ensure that any beamlines using this device have updated their Bluesky plans accordingly
• Have the connection tests for the relevant beamline(s) been run via dodal connect ${BEAMLINE}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.10%. Comparing base (729a8b2) to head (eb7d0e6).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1999      +/-   ##
==========================================
- Coverage   99.10%   99.10%   -0.01%     
==========================================
  Files         327      327              
  Lines       12592    12586       -6     
==========================================
- Hits        12479    12473       -6     
  Misses        113      113              

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