better pending segments management #10307

Job	Run time
changes	4s
build-ubuntu-22.04	21m 38s
test-ubuntu-22.04	38m 44s
test-macos-15	30m 52s
build-macos-15	17m 19s
build-docker-image / docker-build-ubuntu-22.04	10m 3s
build-windows / build	41m 56s
nwaku-nwaku-interop-tests / test-pr / tests	1m 39s
Lint	1m 46s
	2h 44m 1s

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