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/utils/txtesttool/Cargo.toml

@@ -61,3 +61,20 @@ tracing-subscriber = { workspace = true, features = [
 	"fmt",
 	"time",
 ] }
+
+[features]
+std = [
+	"average/std",
+	"codec/std",
+	"futures-util/std",
+	"pezkuwi-subxt-rpcs/std",
+	"pezkuwi-subxt/std",
+	"serde_json/std",
+]
+serde = []
+runtime-benchmarks = [
+	"pezkuwi-subxt-core/runtime-benchmarks",
+	"pezkuwi-subxt-rpcs/runtime-benchmarks",
+	"pezkuwi-subxt-signer/runtime-benchmarks",
+	"pezkuwi-subxt/runtime-benchmarks",
+]