bug: Allow for `Jsonifiable`'s tuple to have multiple elements #5922

Job	Run time
playwright-deploys-precheck (3.10)	1m 56s
check (3.12, ubuntu-latest)	2m 47s
playwright-examples (3.12, chromium)	4m 12s
playwright-shiny (3.12, chromium)	4m 31s
test-narwhals-integration	3m 50s
Deploy to PyPI	0s
	17m 16s

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