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

pezbridges/modules/messages/src/call_ext.rs

@@ -53,8 +53,8 @@ impl<T: Config<I>, I: 'static> CallHelper<T, I> {
 					// `is_obsolete` and every relayer has delivered at least one message,
 					// so if relayer slots are released, then message slots are also
 					// released
-					return post_occupation.free_message_slots >
-						info.unrewarded_relayers.free_message_slots;
+					return post_occupation.free_message_slots
+						> info.unrewarded_relayers.free_message_slots;
 				}
 
 				inbound_lane_data.last_delivered_nonce() == *info.base.bundled_range.end()
@@ -154,8 +154,8 @@ impl<
 				// confirmation. Because of that, we can't assume that our state has been confirmed
 				// to the bridged chain. So we are accepting any proof that brings new
 				// confirmations.
-				bundled_range: outbound_lane_data.latest_received_nonce + 1..=
-					relayers_state.last_delivered_nonce,
+				bundled_range: outbound_lane_data.latest_received_nonce + 1
+					..=relayers_state.last_delivered_nonce,
 				best_stored_nonce: outbound_lane_data.latest_received_nonce,
 			}));
 		}