Add infotext to save_images_before_highres_fix
Fixes #4209: ~~Saving before highres fix now saves images before upscaling when use_scale_latent_for_hires_fix is enabled.~~ (Previous sentence was patched in f674c48.) Saving before highres fix now supports infotext.
To get infotext to work, the sample function needed to accept the argument "iteration". I replicated the style of keeping all the arguments the same for all versions of sample. Like what was done with "prompts" in eb5e82c, I just added argument "iteration".
It seems f674c48 fixed the ordering issue. I renamed this pr to reflect the issue it still resolves.
i made an implementation of this without adding an extra argument to functions