The right panel of the product designer tool consists of various features like alignment, flip, layer, tools, fonts, and other image editing features.
To get it in the mobile view, here is what you should do.
Product Designer Tool(Mobile)
Press the image and the slider as shown in the below image.
After following the instructions, you can get all the features of the right panel, like alignment, flip, layer, tools, fonts, and other image editing features.