In Automator, how to get the folder contents after a "Run Shell Script" action
It is generally advisable to enclose a variable in double quotes.

Use the echo command to return the "renamed-svgs" folder 

rm -rf "$@"/../renamed-svgs
cp -rf "$@"/ "$@"/../renamed-svgs
echo "$@"/../renamed-svgs/




Or use the find command to return files whose name start with icons_

rm -rf "$@"/../renamed-svgs
cp -rf "$@"/ "$@"/../renamed-svgs
find "$@/../renamed-svgs/" -type f -maxdepth 1 -iname 'icons_*' -print