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/teyrchains/pezpallets/pez-treasury/src/migrations.rs

@@ -39,10 +39,10 @@ pub mod v1 {
 				let has_genesis_done =
 					if GenesisDistributionDone::<T>::get() { 1u64 } else { 0u64 };
 
-				let migrated = monthly_releases_count +
-					has_halving_info +
-					has_treasury_start +
-					has_genesis_done;
+				let migrated = monthly_releases_count
+					+ has_halving_info
+					+ has_treasury_start
+					+ has_genesis_done;
 
 				// Update storage version
 				STORAGE_VERSION.put::<Pezpallet<T>>();