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/verifier/impls.rs

@@ -341,10 +341,12 @@ pub(crate) mod pezpallet {
 				// store the valid pages
 				for (support, page) in supports.into_iter().zip(pages.iter()) {
 					match Self::valid() {
-						ValidSolution::X =>
-							QueuedSolutionX::<T>::insert(Self::round(), page, support),
-						ValidSolution::Y =>
-							QueuedSolutionY::<T>::insert(Self::round(), page, support),
+						ValidSolution::X => {
+							QueuedSolutionX::<T>::insert(Self::round(), page, support)
+						},
+						ValidSolution::Y => {
+							QueuedSolutionY::<T>::insert(Self::round(), page, support)
+						},
 					}
 				}
 				QueuedSolutionScore::<T>::insert(Self::round(), score);
@@ -490,8 +492,8 @@ pub(crate) mod pezpallet {
 			// The number of existing keys in `QueuedSolutionBackings` must always match that of
 			// the INVALID variant.
 			ensure!(
-				QueuedSolutionBackings::<T>::iter_prefix(Self::round()).count() ==
-					Self::invalid_iter().count(),
+				QueuedSolutionBackings::<T>::iter_prefix(Self::round()).count()
+					== Self::invalid_iter().count(),
 				"incorrect number of backings pages",
 			);