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

bizinikiwi/primitives/trie/src/accessed_nodes_tracker.rs

@@ -58,9 +58,9 @@ impl<H: Hash> AccessedNodesTracker<H> {
 impl<H: Hash + Ord> TrieRecorder<H> for AccessedNodesTracker<H> {
 	fn record(&mut self, access: TrieAccess<H>) {
 		match access {
-			TrieAccess::NodeOwned { hash, .. } |
-			TrieAccess::EncodedNode { hash, .. } |
-			TrieAccess::Value { hash, .. } => {
+			TrieAccess::NodeOwned { hash, .. }
+			| TrieAccess::EncodedNode { hash, .. }
+			| TrieAccess::Value { hash, .. } => {
 				self.recorder.insert(hash);
 			},
 			_ => {},