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/xcmp-queue/src/mock.rs

@@ -126,8 +126,8 @@ impl<RuntimeOrigin: OriginTrait> ConvertOrigin<RuntimeOrigin>
 		kind: OriginKind,
 	) -> Result<RuntimeOrigin, Location> {
 		let origin = origin.into();
-		if kind == OriginKind::Superuser &&
-			matches!(
+		if kind == OriginKind::Superuser
+			&& matches!(
 				origin.unpack(),
 				(1,	[Teyrchain(id)]) if ParaId::from(*id).is_system(),
 			) {