feat: Delay deserialization of python function until physical plan (#… #11757

Job	Run time
check-features	8m 53s
check-wasm	6m 0s
integration-test (ubuntu-latest)	1m 58s
integration-test (windows-latest)	5m 6s
test (ubuntu-latest)	2m 44s
test (windows-latest)	7m 56s
	32m 37s

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