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

pezkuwi/runtime/common/src/paras_sudo_wrapper.rs

@@ -157,8 +157,9 @@ pub mod pezpallet {
 			let config = configuration::ActiveConfig::<T>::get();
 			dmp::Pezpallet::<T>::queue_downward_message(&config, id, xcm.encode()).map_err(|e| {
 				match e {
-					dmp::QueueDownwardMessageError::ExceedsMaxMessageSize =>
-						Error::<T>::ExceedsMaxMessageSize.into(),
+					dmp::QueueDownwardMessageError::ExceedsMaxMessageSize => {
+						Error::<T>::ExceedsMaxMessageSize.into()
+					},
 					dmp::QueueDownwardMessageError::Unroutable => Error::<T>::Unroutable.into(),
 				}
 			})