Add more tests for Images on buttons

[mattleibow]

There is a fair bit of code being removed, so I am a bit worried. Could you add a test as well for buttons/images that do not have a width or height? Basically, an auto-sized button based on the image size. Maybe even a plain button. Not sur if those tests exist, so might be OK if they do. We have the concept of buttons with text and I am sure there was a PR to do things.

Originally posted by @mattleibow in #17159 (comment)

CC @Foda

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