Round temperatures when displaying them

These are long lines for some screens. It'll save a bit of space. No PID controller can really control down to fractional degrees.
Fan speed and flow rates are already integer settings. For speeds and retraction lenghts the fractions can be important.

Done for #8967.

plugins/PostProcessingPlugin/scripts/ChangeAtZ.py

@@ -774,15 +774,15 @@ class ChangeAtZProcessor:
 
         # looking for wait for bed temp
         if "bedTemp" in values:
-            codes.append("BedTemp: " + str(values["bedTemp"]))
+            codes.append("BedTemp: " + str(round(values["bedTemp"])))
 
         # set our extruder one temp (if specified)
         if "extruderOne" in values:
-            codes.append("Extruder 1 Temp: " + str(values["extruderOne"]))
+            codes.append("Extruder 1 Temp: " + str(round(values["extruderOne"])))
 
         # set our extruder two temp (if specified)
         if "extruderTwo" in values:
-            codes.append("Extruder 2 Temp: " + str(values["extruderTwo"]))
+            codes.append("Extruder 2 Temp: " + str(round(values["extruderTwo"])))
 
         # set global flow rate
         if "flowrate" in values: