Simplify slashes queue processing #5106

Job	Run time
set-tags	7s
cargo-toml-feature-propagation	1m 54s
cargo-clippy	10m 3s
build	4m 3s
check-copyright	6s
Check with rustfmt	16s
toml-formatting	52s
typescript-formatting	23s
typescript-linting	2m 37s
rust-test	29m 59s
Check WASM runtimes with Twiggy	1m 21s
check-api-augment	1m 14s
chopsticks-upgrade-test (stagenet_dancebox, dancebox)	51s
chopsticks-upgrade-test (flashbox, flashbox)	47s
typescript-dancebox-specs	31s
typescript-tests	4m 42s
chopsticks-upgrade-test (dancebox, dancebox)	41s
typescript-tests-flashbox	4m 10s
chopsticks-upgrade-test (frontier_template, container-chain-template-frontier)	51s
typescript-tests-frontier	3m 53s
chopsticks-upgrade-test (stagelight, dancelight)	1m 31s
typescript-tests-relay	4m 4s
typescript-tests-simple-template	2m 21s
zombienet-tests (zombie_tanssi)	7m 28s
zombienet-test-upgrade-containers (frontier_template, container-chain-template-frontier)	4m 34s
zombienet-test-upgrade (dancebox)	3m 51s
zombienet-tests (zombie_tanssi_parathreads)	15m 6s
zombienet-test-upgrade-containers (simple_template, container-chain-template-simple)	5m 28s
zombienet-test-upgrade-starlight (dancelight, dancelight)	1m 9s
zombienet-tests (zombie_tanssi_rotation)	9m 4s
zombienet-tests (zombie_tanssi_warp_sync)	5m 52s
zombienet-tests (zombie_tanssi_relay)	10m 20s
docker-tanssi (tanssi)	46s
zombienet-tests (zombie_data_preservers)	13m 28s
docker-tanssi (container-chain-simple-template)	45s
docker-tanssi (container-chain-evm-template)	1m 6s
docker-tanssi (starlight)	1m 7s
	2h 37m 21s

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