Zocalo results multiple sources

[olliesilvester]

Fixes DiamondLightSource/dodal#559

See related dodal PR: DiamondLightSource/dodal#763

[DominicOram]

I think you might have accidentally pulled in some changes from #429

[codecov]

Codecov Report

Attention: Patch coverage is 87.50000% with 1 line in your changes missing coverage. Please review.

Project coverage is 77.60%. Comparing base (7e3eac5) to head (49d103f).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...yperion/external_interaction/callbacks/__main__.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #445      +/-   ##
==========================================
+ Coverage   77.59%   77.60%   +0.01%     
==========================================
  Files          89       89              
  Lines        6700     6703       +3     
==========================================
+ Hits         5199     5202       +3     
  Misses       1501     1501              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[DominicOram]

Thanks!