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/pezframe/election-provider-multi-block/src/unsigned/miner.rs

@@ -925,8 +925,9 @@ impl<T: Config> OffchainWorkerMiner<T> {
 			|maybe_head: Result<Option<BlockNumberFor<T>>, _>| {
 				match maybe_head {
 					Ok(Some(head)) if now < head => Err("fork."),
-					Ok(Some(head)) if now >= head && now <= head + threshold =>
-						Err("recently executed."),
+					Ok(Some(head)) if now >= head && now <= head + threshold => {
+						Err("recently executed.")
+					},
 					Ok(Some(head)) if now > head + threshold => {
 						// we can run again now. Write the new head.
 						Ok(now)
@@ -961,8 +962,9 @@ impl<T: Config> OffchainWorkerMiner<T> {
 		let storage = StorageValueRef::persistent(&Self::OFFCHAIN_CACHED_CALL);
 		match storage.mutate::<_, (), _>(|_| Ok((call.clone(), snapshot_fingerprint))) {
 			Ok(_) => Ok(()),
-			Err(MutateStorageError::ConcurrentModification(_)) =>
-				Err(OffchainMinerError::FailedToStoreSolution),
+			Err(MutateStorageError::ConcurrentModification(_)) => {
+				Err(OffchainMinerError::FailedToStoreSolution)
+			},
 			Err(MutateStorageError::ValueFunctionFailed(_)) => {
 				// this branch should be unreachable according to the definition of
 				// `StorageValueRef::mutate`: that function should only ever `Err` if the closure we

bizinikiwi/pezframe/election-provider-multi-block/src/unsigned/mod.rs

@@ -240,8 +240,8 @@ mod pezpallet {
 				"weight of `submit_unsigned` is too high"
 			);
 			assert!(
-				<T as Config>::MinerPages::get() as usize <=
-					<T as crate::Config>::Pages::get() as usize,
+				<T as Config>::MinerPages::get() as usize
+					<= <T as crate::Config>::Pages::get() as usize,
 				"number of pages in the unsigned phase is too high"
 			);
 		}