Improve `GT.save()` usability #2130

Job	Run time
test-windows	5m 20s
build (3.9)	1m 24s
build (3.10)	1m 3s
build (3.11)	1m 2s
Test for saving table image with browser	2m 53s
test-pandas	50s
build (3.12)	1m 13s
Release to pypi	0s
	13m 45s

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