allow actual COMBO in the "load image from Outputs" to inlcude TEMP folder

this node uses COMBO input type for a single hard-coded search of the local outputs folder as an option in the COMBO.

**instead**, it should also include the local "temp" folder.

by allowing this, the end user can utilize the preview node that saves outputs to TEMP and send that to this node, _without_ having to pollute the persistent OUTPUTS folder.

https://github.com/Comfy-Org/ComfyUI/blob/95fdc6cf910f809e39edc3254470e619ffa9dbf8/nodes.py#L1819