feat(collator) add export pov on slot base collator #21719

Job	Run time
isdraft / isdraft	1s
check-dependency-rules	9s
check-fail-ci	16s
check-markdown	12s
check-readme	3m 25s
check-workspace	25s
preflight / preflight	44s
preflight / ci-versions	1m 0s
check-rust-feature-propagation	2m 2s
test-rust-features	2m 3s
fmt	1m 9s
check-toml-format	1m 5s
check-umbrella	2m 7s
All quick checks passed	1s
	14m 39s

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