Renderer: Change condition for when we clone render command
Renderer: Change condition for when we clone render command

* Need to ensure that copying occurs when we're using a render texture (i.e. group id > 0), so that state of command
is maintained
* Sample issue: visit sprite in render texture, then subsequently change sprite position, then add sprite to main scene graph
* Prior to this commit, this would alter the render command corresponding to a draw in the render texture which is not the desired behaviour

zmaruo/CocosSharp,zmaruo/CocosSharp,haithemaraissia/CocosSharp,mono/CocosSharp,MSylvia/CocosSharp,TukekeSoft/CocosSharp,TukekeSoft/CocosSharp,MSylvia/CocosSharp,mono/CocosSharp,haithemaraissia/CocosSharp