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

pezbridges/bin/runtime-common/src/extensions.rs

@@ -174,8 +174,8 @@ where
 		// we are only interested in associated pezpallet submissions
 		let Some(update) = maybe_update else { return };
 		// we are only interested in failed or unneeded transactions
-		let has_failed = has_failed ||
-			!SubmitTeyrchainHeadsHelper::<T, TeyrchainsInstance>::was_successful(&update);
+		let has_failed = has_failed
+			|| !SubmitTeyrchainHeadsHelper::<T, TeyrchainsInstance>::was_successful(&update);
 
 		if !has_failed {
 			return;

pezbridges/bin/runtime-common/src/mock.rs

@@ -240,8 +240,8 @@ impl MessageDispatch for DummyMessageDispatch {
 	type LaneId = TestLaneIdType;
 
 	fn is_active(lane: Self::LaneId) -> bool {
-		pezframe_support::storage::unhashed::take::<bool>(&(b"inactive", lane).encode()[..]) !=
-			Some(false)
+		pezframe_support::storage::unhashed::take::<bool>(&(b"inactive", lane).encode()[..])
+			!= Some(false)
 	}
 
 	fn dispatch_weight(