fix: INP_OnScreenKeyboard softlock

Minecraft.Client/PS3/PS3_Minecraft.cpp

@@ -1031,6 +1031,13 @@ int main()
 
 	while( ShutdownManager::ShouldRun(ShutdownManager::eMainThread) )
 	{
+		// PIEBOT: This previously was under SQRNetworkManager_PS3::Tick()
+		// It ticks all callbacks for SysUtil, including the ones used in INP_OnScreenKeyboard.cpp
+		// When we nuked SQRNetworkManager_PS3, We also unintentionally broke the on-screen keyboard.
+
+		// TO-DO: put it under app.Tick();
+		cellSysutilCheckCallback();
+
 		app.UpdateTime();
 		PIXBeginNamedEvent(0,"Input manager tick");
 		InputManager.Tick();