Fix: `cols_width()` should exclude hidden columns #2143

Job	Run time
Test for saving table image with browser	8m 0s
build (3.9)	1m 16s
test-pandas	41s
test-windows	3m 52s
build (3.10)	1m 0s
build (3.11)	1m 17s
build (3.12)	1m 21s
build (3.13)	1m 13s
Release to pypi	0s
	18m 40s

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