Safeguard against invalid user input in render_shapes#512

timtreis merged 7 commits intomainscverse/spatialdata-plot:mainfrom

bugfix/issue475-render_shapes-fails-when-1-shapes-match-single-tableobsscverse/spatialdata-plot:bugfix/issue475-render_shapes-fails-when-1-shapes-match-single-tableobsCopy head branch name to clipboard