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/node/network/dispute-distribution/src/receiver/batches/batch.rs

@@ -177,8 +177,8 @@ impl Batch {
 	/// This function is supposed to be called at instants given at construction and as returned as
 	/// part of `TickResult`.
 	pub(super) fn tick(mut self, now: Instant) -> TickResult {
-		if self.votes_batched_since_last_tick >= MIN_KEEP_BATCH_ALIVE_VOTES &&
-			now < self.best_before
+		if self.votes_batched_since_last_tick >= MIN_KEEP_BATCH_ALIVE_VOTES
+			&& now < self.best_before
 		{
 			// Still good:
 			let next_tick = self.calculate_next_tick(now);