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/statement-distribution/src/v2/grid.rs

@@ -283,11 +283,13 @@ impl GridTracker {
 			//   * They are in the sending set for the group AND we have sent them a manifest AND
 			//     the received manifest is partial.
 			ManifestKind::Full => receiving_from,
-			ManifestKind::Acknowledgement =>
-				sending_to &&
-					self.confirmed_backed
+			ManifestKind::Acknowledgement => {
+				sending_to
+					&& self
+						.confirmed_backed
 						.get(&candidate_hash)
-						.map_or(false, |c| c.has_sent_manifest_to(sender)),
+						.map_or(false, |c| c.has_sent_manifest_to(sender))
+			},
 		};
 
 		if !manifest_allowed {
@@ -1083,10 +1085,10 @@ impl KnownBackedCandidate {
 			.filter(|k| k.local_knowledge.is_some())
 			.and_then(|k| k.remote_knowledge.as_ref())
 			.map(|remote| StatementFilter {
-				seconded_in_group: full_local.seconded_in_group.clone() &
-					!remote.seconded_in_group.clone(),
-				validated_in_group: full_local.validated_in_group.clone() &
-					!remote.validated_in_group.clone(),
+				seconded_in_group: full_local.seconded_in_group.clone()
+					& !remote.seconded_in_group.clone(),
+				validated_in_group: full_local.validated_in_group.clone()
+					& !remote.validated_in_group.clone(),
 			})
 	}
 }