fix(windows): resolve disappearing cursor after KVM switch (#4407)

src/platform/windows/misc.cpp

@@ -1133,7 +1133,10 @@ namespace platf {
         }
       }
     }
+    enable_mouse_keys();
+  }
 
+  void enable_mouse_keys() {
     // If there is no mouse connected, enable Mouse Keys to force the cursor to appear
     if (!GetSystemMetrics(SM_MOUSEPRESENT)) {
       BOOST_LOG(info) << "A mouse was not detected. Sunshine will enable Mouse Keys while streaming to force the mouse cursor to appear.";