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/primitives/state-machine/src/basic.rs

@@ -127,13 +127,14 @@ impl PartialEq for BasicExternalities {
 		self.overlay
 			.changes()
 			.map(|(k, v)| (k, v.value_ref().materialize()))
-			.collect::<BTreeMap<_, _>>() ==
-			other
+			.collect::<BTreeMap<_, _>>()
+			== other
 				.overlay
 				.changes()
 				.map(|(k, v)| (k, v.value_ref().materialize()))
-				.collect::<BTreeMap<_, _>>() &&
-			self.overlay
+				.collect::<BTreeMap<_, _>>()
+			&& self
+				.overlay
 				.children()
 				.map(|(iter, i)| {
 					(
@@ -142,8 +143,8 @@ impl PartialEq for BasicExternalities {
 							.collect::<BTreeMap<_, _>>(),
 					)
 				})
-				.collect::<BTreeMap<_, _>>() ==
-				other
+				.collect::<BTreeMap<_, _>>()
+				== other
 					.overlay
 					.children()
 					.map(|(iter, i)| {