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/broker/src/benchmarking.rs

@@ -270,8 +270,8 @@ mod benches {
 		_(origin as T::RuntimeOrigin, initial_price, extra_cores.try_into().unwrap());
 
 		assert!(SaleInfo::<T>::get().is_some());
-		let sale_start = RCBlockNumberProviderOf::<T::Coretime>::current_block_number() +
-			config.interlude_length;
+		let sale_start = RCBlockNumberProviderOf::<T::Coretime>::current_block_number()
+			+ config.interlude_length;
 		assert_last_event::<T>(
 			Event::SaleInitialized {
 				sale_start,