When native feature is enabled, we need polkadot-sdk/std for eg examp… #5455

Job	Run time
Cargo fmt	18s
Check unused dependencies	44s
Cargo clippy (WASM)	57s
Cargo check (WASM)	1m 35s
Cargo clippy	5m 15s
Cargo check	9m 32s
Check documentation and run doc tests	7m 0s
Test (no_std)	1m 54s
Test (WASM)	10m 37s
Test chainhead backend	17m 25s
Test (Native)	17m 21s
Test (Light Client)	3m 36s
	1h 16m 14s

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