Attempt to quickfix flaky legacy_and_unstable_block_subscription_reconnect #5466

Job	Run time
Cargo fmt	11s
Check unused dependencies	25s
Cargo check (WASM)	1m 34s
Cargo check	12m 5s
Check documentation and run doc tests	4m 32s
Cargo clippy	6m 4s
Cargo clippy (WASM)	2m 7s
Test (no_std)	1m 51s
Test chainhead backend	13m 48s
Test (Native)	18m 10s
Test (WASM)	10m 34s
Test (Light Client)	7m 15s
	1h 18m 36s

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