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/relays/teyrchains/src/teyrchains_loop.rs

@@ -359,8 +359,8 @@ where
 					// find last free relay chain header in the range that we are interested in
 					let scan_range_begin = relay_of_head_at_target.number();
 					let scan_range_end = best_finalized_relay_block_at_target.number();
-					if scan_range_end.saturating_sub(scan_range_begin) <
-						free_source_relay_headers_interval
+					if scan_range_end.saturating_sub(scan_range_begin)
+						< free_source_relay_headers_interval
 					{
 						// there are no new **free** relay chain headers in the range
 						tracing::trace!(
@@ -647,7 +647,9 @@ impl<P: TeyrchainsPipeline> SubmittedHeadsTracker<P> {
 		let is_head_updated = match (self.submitted_head, head_at_target) {
 			(AvailableHeader::Available(submitted_head), Some(head_at_target))
 				if head_at_target.number() >= submitted_head.number() =>
-				true,
+			{
+				true
+			},
 			(AvailableHeader::Missing, None) => true,
 			_ => false,
 		};
@@ -669,8 +671,9 @@ impl<P: TeyrchainsPipeline> SubmittedHeadsTracker<P> {
 		// then restart our sync
 		let transaction_tracker = self.transaction_tracker.clone();
 		match poll!(transaction_tracker) {
-			Poll::Ready(TrackedTransactionStatus::Lost) =>
-				return SubmittedHeadStatus::Final(TrackedTransactionStatus::Lost),
+			Poll::Ready(TrackedTransactionStatus::Lost) => {
+				return SubmittedHeadStatus::Final(TrackedTransactionStatus::Lost)
+			},
 			Poll::Ready(TrackedTransactionStatus::Finalized(_)) => {
 				// so we are here and our transaction is mined+finalized, but some of heads were not
 				// updated => we're considering our loop as stalled