fix: allow copying the block cid from winning stats table #41

Job	Run time
ci-lint	17s
build-forest	4m 34s
build-2k	4m 23s
build-debug	4m 25s
build-calibnet	4m 15s
build-mainnet	4m 29s
gen-check	5m 20s
gofmt	18s
lint	2m 55s
mod-tidy-check	42s
setup-params	5s
test (test-itest-curio, ./itests/curio_test.go)	4m 26s
test (test-all, `go list ./... \| grep -v curio/itests`)	2m 38s
test (test-itest-harmonyDB, ./itests/harmonydb_test.go)	2m 30s
test (test-itest-alertnow, ./itests/alertnow_test.go)	1m 44s
	43m 1s

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