[AGIPD] Read bias_voltage for AGIPD at SPB and MID from RUN source

get_bias_voltage() read bias_voltage for HED_DET_AGIPD500K2G only.

Description

Start using SPB_DET_AGIPD1M/PSC/HV/channels.U0.measurementSenseVoltage.value and MID_DET_AGIPD1M/PSC/HV/channels.U0.measurementSenseVoltage.value to ready bias voltage for SPB_DET_AGIPD1M-1 and MID_DET_AGIPD1M-1.

How Has This Been Tested?

Relevant Documents (optional)

Types of changes

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• I have updated the documentation accordingly.
• I added tests where appropriate. A part of a different MR: https://git.xfel.eu/detectors/pycalibration/-/merge_requests/646

Reviewers

@calibration

src/cal_tools/agipdlib.py

@@ -202,11 +202,14 @@ class AgipdCtrl:
                 "highVoltage.actual.value")
             default_voltage = None
 
-
         if (
             voltage_src[0] in self.run_dc.all_sources and
             voltage_src[1] in self.run_dc.keys_for_source(voltage_src[0])
         ):
+            # Use RUN source for reading the bias voltage value.
+            # As HED_DET_AGIPD500K2G has a hardware issue that leads
+            # to storing arbitrary voltage values in the CONTROL source
+            # array. e.g. /gpfs/exfel/exp/HED/202230/p900248/raw
             return int(self.run_dc.get_run_value(*voltage_src))
         else:
             # TODO: Validate if removing this and