Windows: Use Thread::sleep() instead of yield() when waiting for ChildProcess output to avoid eating CPU

modules/juce_core/native/juce_win32_Threads.cpp

@@ -448,7 +448,7 @@ public:
                 if (! isRunning())
                     break;
 
-                Thread::yield();
+                Thread::sleep (1);
             }
             else
             {