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/pezframe/asset-conversion/ops/src/benchmarking.rs

@@ -82,10 +82,10 @@ fn mint_setup_fee_asset<T: Config>(
 	assert_ok!(T::Assets::mint_into(
 		T::PoolSetupFeeAsset::get(),
 		&caller,
-		T::PoolSetupFee::get() +
-			T::Assets::deposit_required(asset1.clone()) +
-			T::Assets::deposit_required(asset2.clone()) +
-			T::PoolAssets::deposit_required(lp_token.clone())
+		T::PoolSetupFee::get()
+			+ T::Assets::deposit_required(asset1.clone())
+			+ T::Assets::deposit_required(asset2.clone())
+			+ T::PoolAssets::deposit_required(lp_token.clone())
 	));
 }