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.

vendor/pezkuwi-subxt/subxt/Cargo.toml

@@ -71,6 +71,39 @@ unstable-light-client = [
 
 # Activate this to expose the ability to generate metadata from Wasm runtime files.
 runtime-wasm-path = ["pezkuwi-subxt-macro/runtime-wasm-path"]
+std = [
+	"bitvec/std",
+	"codec/std",
+	"either/std",
+	"frame-metadata/std",
+	"hex/std",
+	"pezkuwi-subxt-lightclient?/std",
+	"pezkuwi-subxt-macro/std",
+	"pezkuwi-subxt-metadata/std",
+	"pezkuwi-subxt-rpcs/std",
+	"pezsp-core/std",
+	"pezsp-crypto-hashing/std",
+	"pezsp-keyring/std",
+	"pezsp-runtime/std",
+	"primitive-types/std",
+	"scale-info/std",
+	"serde/std",
+	"serde_json/std",
+	"tracing/std",
+]
+try-runtime = [
+	"pezsp-keyring/try-runtime",
+	"pezsp-runtime/try-runtime",
+]
+serde = []
+runtime-benchmarks = [
+	"pezkuwi-subxt-core/runtime-benchmarks",
+	"pezkuwi-subxt-macro/runtime-benchmarks",
+	"pezkuwi-subxt-rpcs/runtime-benchmarks",
+	"pezkuwi-subxt-signer/runtime-benchmarks",
+	"pezsp-keyring/runtime-benchmarks",
+	"pezsp-runtime/runtime-benchmarks",
+]
 
 [dependencies]
 async-trait = { workspace = true }