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/democracy/src/lib.rs

@@ -1670,8 +1670,8 @@ impl<T: Config> Pezpallet<T> {
 		//   of unbaked referendum is bounded by this number. In case those number have changed in a
 		//   runtime upgrade the formula should be adjusted but the bound should still be sensible.
 		LowestUnbaked::<T>::mutate(|ref_index| {
-			while *ref_index < last &&
-				ReferendumInfoOf::<T>::get(*ref_index)
+			while *ref_index < last
+				&& ReferendumInfoOf::<T>::get(*ref_index)
 					.map_or(true, |info| matches!(info, ReferendumInfo::Finished { .. }))
 			{
 				*ref_index += 1