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.

Cargo.lock

@@ -1044,6 +1044,9 @@ name = "array-bytes"
 version = "6.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5d5dde061bd34119e902bbb2d9b90c5692635cf59fb91d582c2b68043f1b8293"
+dependencies = [
+ "serde",
+]
 
 [[package]]
 name = "array-bytes"
@@ -3935,6 +3938,7 @@ dependencies = [
  "digest 0.10.7",
  "fiat-crypto",
  "rustc_version 0.4.1",
+ "serde",
  "subtle 2.6.1",
  "zeroize",
 ]
@@ -4537,6 +4541,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "115531babc129696a58c64a4fef0a8bf9e9698629fb97e9e40767d235cfbcd53"
 dependencies = [
  "pkcs8",
+ "serde",
  "signature",
 ]
 
@@ -4566,6 +4571,7 @@ dependencies = [
  "hashbrown 0.15.5",
  "pkcs8",
  "rand_core 0.6.4",
+ "serde",
  "sha2 0.10.9",
  "subtle 2.6.1",
  "zeroize",
@@ -4740,6 +4746,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1027f7680c853e056ebcec683615fb6fbbc07dbaa13b4d5d9442b146ded4ecef"
 dependencies = [
  "enumflags2_derive",
+ "serde",
 ]
 
 [[package]]
@@ -5991,6 +5998,9 @@ name = "hex"
 version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
+dependencies = [
+ "serde",
+]
 
 [[package]]
 name = "hex-conservative"
@@ -8078,6 +8088,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "224399e74b87b5f3557511d98dff8b14089b3dadafcab6bb93eab67d3aace965"
 dependencies = [
  "scopeguard",
+ "serde",
 ]
 
 [[package]]
@@ -22795,6 +22806,7 @@ checksum = "32cb0b9bc82b0a0876c2dd994a7e7a2683d3e7390ca40e6886785ef0c7e3ee31"
 dependencies = [
  "num-traits",
  "rand 0.8.5",
+ "serde",
 ]
 
 [[package]]
@@ -22804,6 +22816,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "59cad018caf63deb318e5a4586d99a24424a364f40f1e5778c29aca23f4fc73e"
 dependencies = [
  "rand_core 0.6.4",
+ "serde",
 ]
 
 [[package]]
@@ -24053,10 +24066,12 @@ dependencies = [
  "aead",
  "arrayref",
  "arrayvec 0.7.6",
+ "cfg-if",
  "curve25519-dalek",
  "getrandom_or_panic",
  "merlin",
  "rand_core 0.6.4",
+ "serde",
  "serde_bytes",
  "sha2 0.10.9",
  "subtle 2.6.1",
@@ -24137,6 +24152,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d24b59d129cdadea20aea4fb2352fa053712e5d713eee47d700cd4b2bc002f10"
 dependencies = [
  "secp256k1-sys 0.9.2",
+ "serde",
 ]
 
 [[package]]
@@ -25115,7 +25131,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "057291e5631f280978fa9c8009390663ca4613359fc1318e36a8c24c392f6d1f"
 dependencies = [
  "bitvec",
+ "hex",
  "num-bigint",
+ "serde",
  "sha2 0.9.9",
  "ssz_rs_derive",
 ]
@@ -28671,6 +28689,7 @@ version = "1.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b97154e67e32c85465826e8bcc1c59429aaaf107c1e4a9e53c8d8ccd5eff88d0"
 dependencies = [
+ "serde",
  "zeroize_derive",
 ]