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/runtime/teyrchains/src/builder.rs

@@ -837,10 +837,10 @@ impl<T: paras_inherent::Config> BenchBuilder<T> {
 			.sum::<usize>()
 			.saturating_sub(self.elastic_paras.len() as usize);
 
-		let used_cores = self.dispute_sessions.len() +
-			self.backed_and_concluding_paras.len() +
-			self.backed_in_inherent_paras.len() +
-			extra_cores;
+		let used_cores = self.dispute_sessions.len()
+			+ self.backed_and_concluding_paras.len()
+			+ self.backed_in_inherent_paras.len()
+			+ extra_cores;
 
 		assert!(used_cores <= max_cores);
 
@@ -873,8 +873,8 @@ impl<T: paras_inherent::Config> BenchBuilder<T> {
 			(used_cores - extra_cores) as u32,
 			builder.dispute_sessions.as_slice(),
 		);
-		let mut disputed_cores = (builder.backed_and_concluding_paras.len() as u32..
-			((used_cores - extra_cores) as u32))
+		let mut disputed_cores = (builder.backed_and_concluding_paras.len() as u32
+			..((used_cores - extra_cores) as u32))
 			.into_iter()
 			.map(|idx| (idx, 0))
 			.collect::<BTreeMap<_, _>>();