I24 ssx test hotfixes

[noemifrisina]

• Wrong PV name
• Set up and enum or something to look up what detector is requested. The choice on the edm will set the value to 0/1 instead of eiger/pilatus ( -> follow up to this: set up something similar for map_type and chip_type)
• Temporary fix for log permission issue
• OAV only uses crosshair from zoom 1.0, on I24 this is not updated beyond this line, so simply set that level for moveonclick

For Viewer/OAVParams issue see #44

[codecov]

Codecov Report

Attention: 5 lines in your changes are missing coverage. Please review.

Comparison is base (f6c086e) 47.92% compared to head (83d2d7a) 47.91%.

Files	Patch %	Lines
src/mx_bluesky/I24/serial/log.py	40.00%	3 Missing ⚠️
...esky/I24/serial/fixed_target/i24ssx_moveonclick.py	66.66%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #59      +/-   ##
==========================================
- Coverage   47.92%   47.91%   -0.02%     
==========================================
  Files          21       21              
  Lines        3309     3308       -1     
==========================================
- Hits         1586     1585       -1     
  Misses       1723     1723              

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[d-perl]

Looks good to me