fix: correct feature gates for storage-benchmark and metadata-hash

- StorageCmd: change cfg from runtime-benchmarks to storage-benchmark
- enable_metadata_hash_in_wasm_builder: add cfg(feature = "metadata-hash") gate
- Add storage-benchmark feature to pezkuwi-omni-node-lib Cargo.toml
- Add metadata-hash feature to pezframe-metadata-hash-extension Cargo.toml

These fixes resolve cargo-check-all-benches CI failures.

bizinikiwi/pezframe/metadata-hash-extension/Cargo.toml

@@ -66,3 +66,4 @@ serde = []
 experimental = []
 with-tracing = []
 tuples-96 = []
+metadata-hash = ["bizinikiwi-wasm-builder/metadata-hash"]

bizinikiwi/pezframe/metadata-hash-extension/src/tests.rs

@@ -172,6 +172,9 @@ mod docs {
 		type PalletInfo = add_metadata_hash_extension::PalletInfo;
 	}
 
+	/// This function demonstrates how to enable metadata hash in WasmBuilder.
+	/// It is only available when the `metadata-hash` feature is enabled on `bizinikiwi-wasm-builder`.
+	#[cfg(feature = "metadata-hash")]
 	#[docify::export]
 	fn enable_metadata_hash_in_wasm_builder() {
 		bizinikiwi_wasm_builder::WasmBuilder::init_with_defaults()