style: Migrate to stable-only rustfmt configuration

- Remove nightly-only features from .rustfmt.toml and vendor/ss58-registry/rustfmt.toml
- Removed features: imports_granularity, wrap_comments, comment_width,
  reorder_impl_items, spaces_around_ranges, binop_separator,
  match_arm_blocks, trailing_semicolon, trailing_comma
- Format all 898 affected files with stable rustfmt
- Ensures long-term reliability without nightly toolchain dependency

pezcumulus/teyrchains/runtimes/testing/pezkuwichain-teyrchain/src/genesis_config_presets.rs

@@ -59,8 +59,9 @@ pub fn get_preset(id: &PresetId) -> Option<Vec<u8>> {
 	};
 
 	let patch = match id.as_ref() {
-		pezsp_genesis_builder::DEV_RUNTIME_PRESET =>
-			genesis_fn(vec![Sr25519Keyring::Alice.public().into()]),
+		pezsp_genesis_builder::DEV_RUNTIME_PRESET => {
+			genesis_fn(vec![Sr25519Keyring::Alice.public().into()])
+		},
 		pezsp_genesis_builder::LOCAL_TESTNET_RUNTIME_PRESET => genesis_fn(vec![
 			Sr25519Keyring::Alice.public().into(),
 			Sr25519Keyring::Bob.public().into(),