refactor(typing): use closed=True in some TypedDicts - #3800

refactor(typing): use closed=True in some TypedDicts#3800

MarcoGorelli wants to merge 3 commits into

narwhals-dev:mainnarwhals-dev/narwhals:mainfrom

MarcoGorelli:closed-typeddictMarcoGorelli/narwhals:closed-typeddictCopy head branch name to clipboard