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

pezcumulus/pezpallets/collator-selection/src/benchmarking.rs

@@ -274,8 +274,8 @@ mod benchmarks {
 		let caller = CandidateList::<T>::get()[0].who.clone();
 		v2::whitelist!(caller);
 
-		let bond_amount: BalanceOf<T> = <T as pezpallet::Config>::Currency::minimum_balance() +
-			<T as pezpallet::Config>::Currency::minimum_balance();
+		let bond_amount: BalanceOf<T> = <T as pezpallet::Config>::Currency::minimum_balance()
+			+ <T as pezpallet::Config>::Currency::minimum_balance();
 
 		#[extrinsic_call]
 		_(RawOrigin::Signed(caller.clone()), bond_amount);
@@ -284,8 +284,8 @@ mod benchmarks {
 			Event::CandidateBondUpdated { account_id: caller, deposit: bond_amount }.into(),
 		);
 		assert!(
-			CandidateList::<T>::get().iter().last().unwrap().deposit ==
-				<T as pezpallet::Config>::Currency::minimum_balance() * 2u32.into()
+			CandidateList::<T>::get().iter().last().unwrap().deposit
+				== <T as pezpallet::Config>::Currency::minimum_balance() * 2u32.into()
 		);
 		Ok(())
 	}