Scale9Sprite size, RenderTexture size, colorized progress timer fix on canvas renderer

fixed Scale9Sprite size on canvas renderer with contentScaleFactor != 1;
fixed RenderTexture size on canvas renderer with contentScaleFactor != 1;
fixed colorized progress timer rendering on canvas;

Scale9Sprite and RenderTexture have wrong sizes on canvas renderer when contentScaleFactor != 1;
ProgressTimer didn't draw colorized sprite on canvas renderer.