fix: fix and cleanup metrics (sequencers + block) #416

Job	Run time
Determine Image Tag	2s
lint / golangci-lint	1m 15s
lint / hadolint	8s
lint / yamllint	9s
lint / goreleaser-check	7s
test / Go Mod Tidy Check	34s
lint / markdown-lint	30s
test / Run Unit Tests	2m 55s
test / Build All ev-node Binaries	1m 24s
test / Run Integration Tests	1m 35s
proto / buf-check	7s
docker / Build ev-node-evm	15m 35s
docker / Build ev-node-testapp	14m 34s
test / Run E2E System Tests	4m 35s
test / Run EVM Execution Tests	2m 9s
test / Combine and Upload Coverage	10s
docker-tests / Docker Upgrade E2E Tests	2m 58s
docker-tests / Docker E2E Tests	6m 34s
	55m 21s

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