chore: more efficient metrics usage #6334

Job	Run time
changes	4s
build-ubuntu-22.04	27m 18s
test-ubuntu-22.04	33m 26s
build-macos-13	26m 17s
test-macos-13	32m 14s
build-docker-image / docker-build-ubuntu-22.04	5m 38s
js-waku-node-optional / node	2m 23s
js-waku-node / node	13m 52s
nwaku-nwaku-interop-tests / test-pr / tests	4m 32s
Lint	31s
	2h 26m 15s

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