chainHead: Track reported blocks to capture notification gaps #10113

Job	Run time
check-dependency-rules	10s
check-markdown	15s
check-fail-ci	9s
check-workspace	17s
preflight / preflight	45s
preflight / ci-versions	1m 10s
test-rust-features	2m 18s
check-rust-feature-propagation	2m 6s
check-toml-format	1m 7s
check-umbrella	2m 35s
fmt	1m 7s
All quick checks passed	1s
	12m 0s

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