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

bizinikiwi/utils/txtesttool/src/transaction.rs

@@ -9,15 +9,15 @@ use crate::{
 	helpers::StreamOf,
 	runner::DefaultTxTask,
 	subxt_transaction::{
-		build_subxt_tx, EthPayloadBuilderFn, EthRuntimeConfig, EthTransaction, EthTransactionsSink,
-		HashOf, SubPayloadBuilderFn, BizinikiwTransaction, BizinikiwTransactionsSink,
+		build_subxt_tx, BizinikiwTransaction, BizinikiwTransactionsSink, EthPayloadBuilderFn,
+		EthRuntimeConfig, EthTransaction, EthTransactionsSink, HashOf, SubPayloadBuilderFn,
 	},
 };
 use async_trait::async_trait;
-use serde::{Deserialize, Serialize};
-use std::any::Any;
 use pezkuwi_subxt::{tx::TxStatus, OnlineClient, PezkuwiConfig};
 use pezkuwi_subxt_core::config::Hash as BlockHash;
+use serde::{Deserialize, Serialize};
+use std::any::Any;
 
 /// Parameters for building a transaction.
 pub(crate) struct BuildTransactionParams<'a> {