Merge CloudBlueBG and CloudGreyBG into one icon without colour

We don't use the colour of icons. The colour is determined by the theme, and recoloured by UM.RecolorImage.

Contributes to issue CURA-8247.

resources/qml/PrinterSelector/MachineSelector.qml

@@ -124,13 +124,9 @@ Cura.ExpandablePopup
                 {
                     return UM.Theme.getIcon("CheckBlueBG", "low")
                 }
-                else if (connectionStatus == "printer_cloud_connected")
+                else if (connectionStatus == "printer_cloud_connected" || connectionStatus == "printer_cloud_not_available")
                 {
-                    return UM.Theme.getIcon("CloudBlueBG", "low")
-                }
-                else if (connectionStatus == "printer_cloud_not_available")
-                {
-                    return UM.Theme.getIcon("CloudGreyBG", "low")
+                    return UM.Theme.getIcon("CloudBadge", "low")
                 }
                 else
                 {

resources/themes/cura-light/icons/low/CloudBadge.svg

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 12 12">
-<path fill="#196EF0" d="M6,0C2.7,0,0,2.7,0,6s2.7,6,6,6s6-2.7,6-6S9.3,0,6,0z M7,9H4C2.9,9,2,8.1,2,7s0.9-2,2-2c0.1,0,0.1,0,0.2,0
+<path d="M6,0C2.7,0,0,2.7,0,6s2.7,6,6,6s6-2.7,6-6S9.3,0,6,0z M7,9H4C2.9,9,2,8.1,2,7s0.9-2,2-2c0.1,0,0.1,0,0.2,0
 	C4.6,3.8,5.7,3,7,3c1.7,0,3,1.3,3,3S8.7,9,7,9z" />
 </svg>

resources/themes/cura-light/icons/low/CloudGreyBG.svg

@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<svg version="1.1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 12 12">
-<path fill="#6C6C6C" d="M6,0C2.7,0,0,2.7,0,6s2.7,6,6,6s6-2.7,6-6S9.3,0,6,0z M7,9H4C2.9,9,2,8.1,2,7s0.9-2,2-2c0.1,0,0.1,0,0.2,0
-	C4.6,3.8,5.7,3,7,3c1.7,0,3,1.3,3,3S8.7,9,7,9z" />
-</svg>