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/metadata/Cargo.toml

@@ -20,6 +20,8 @@ std = [
 	"codec/std",
 	"frame-decode/std",
 	"frame-metadata/std",
+	"pezkuwi-subxt-codegen/std",
+	"pezkuwi-subxt-utils-stripmetadata/std",
 	"pezsp-crypto-hashing/std",
 	"scale-info/std",
 ]
@@ -33,6 +35,7 @@ legacy = [
 	"frame-metadata/legacy",
 	"std",
 ]
+serde = []
 
 [dependencies]
 codec = { package = "parity-scale-codec", workspace = true, default-features = false, features = ["derive"] }