[pallet-revive] implement the ref_time_left API #16552

Job	Run time
check-dependency-rules	9s
check-fail-ci	20s
check-markdown	20s
check-readme	3m 21s
check-workspace	22s
preflight / preflight	43s
preflight / ci-versions	1m 5s
fmt	1m 9s
check-rust-feature-propagation	2m 7s
check-toml-format	1m 7s
test-rust-features	1m 58s
check-umbrella	2m 16s
All quick checks passed	1s
	14m 58s

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