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-rewards/src/benchmarking.rs

@@ -258,8 +258,8 @@ mod benchmarks {
 		}
 
 		let new_reward_rate_per_block =
-			T::Assets::minimum_balance(T::BenchmarkHelper::reward_asset()).max(T::Balance::one()) +
-				T::Balance::one();
+			T::Assets::minimum_balance(T::BenchmarkHelper::reward_asset()).max(T::Balance::one())
+				+ T::Balance::one();
 
 		#[extrinsic_call]
 		_(caller_origin as T::RuntimeOrigin, 0, new_reward_rate_per_block);
@@ -296,8 +296,8 @@ mod benchmarks {
 		}
 
 		let new_expiry_block = pool_expire::<T>()
-			.evaluate(T::BlockNumberProvider::current_block_number()) +
-			BlockNumberFor::<T>::one();
+			.evaluate(T::BlockNumberProvider::current_block_number())
+			+ BlockNumberFor::<T>::one();
 
 		#[extrinsic_call]
 		_(create_origin as T::RuntimeOrigin, 0, DispatchTime::At(new_expiry_block));