Update pallet nomination pool to support Block Number Provider #7255

Job	Run time
preflight / preflight	42s
preflight / ci-versions	1m 28s
cargo-check-benches (master)	20m 51s
cargo-check-benches (current)	23m 58s
cargo-check-all-crate-macos	11m 35s
cargo-check-each-crate (1)	22m 34s
cargo-check-each-crate (2)	21m 12s
test-frame-ui	46m 44s
test-full-crypto-feature	2m 44s
cargo-check-each-crate (3)	8m 52s
test-node-metrics	10m 52s
cargo-check-each-crate (4)	20m 33s
cargo-check-each-crate (5)	28m 50s
cargo-check-each-crate (6)	15m 0s
cargo-check-each-crate (7)	30m 26s
test-frame-examples-compile-to-wasm	3m 9s
test-deterministic-wasm	7m 48s
check-tracing	2m 30s
check-metadata-hash	7m 6s
node-bench-regression-guard	17s
All test misc tests passed	1s
	4h 47m 12s

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