Set Table Row Height

I have a table that I'm displaying images in (as an image URL, e.g. {{"data:image/png;base64,"+self}} ), but the rows are far too narrow for the image to be clearly viewed. Is there any way I can set them to be larger?

One thing I've tried is HTML, e.g. <img src={{ "data:image/png;base64,"+self}} width="600px" height="200px">, but there I find that the image fails to display at all (broken image). If I hard code the base64 into the data URL it works fine though. Not sure why the HTML is behaving differently than the image URL.

Turn on Dynamically adjust row height in the table
Screen Shot 2022-06-02 at 6.13.28 PM