fix: comprehensive feature propagation and dep:serde fixes

- Fix serde optional dependency issues by adding dep:serde to serde features (24 crates)
- Run zepter to propagate runtime-benchmarks, std, try-runtime, serde, experimental, with-tracing, tuples-96 features
- Regenerate umbrella crate with proper feature propagation
- Format all TOML files with taplo

This resolves check-umbrella and check-zepter CI failures.

bizinikiwi/pezframe/staking-async/reward-fn/Cargo.toml

@@ -24,3 +24,4 @@ pezsp-arithmetic = { workspace = true }
 [features]
 default = ["std"]
 std = ["log/std", "pezsp-arithmetic/std"]
+serde = []