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

pezkuwi/xcm/xcm-runtime-pezapis/tests/mock.rs

@@ -186,8 +186,8 @@ type Weigher = FixedWeightBounds<BaseXcmWeight, RuntimeCall, MaxInstructions>;
 pub struct NativeTokenToAssetHub;
 impl ContainsPair<Asset, Location> for NativeTokenToAssetHub {
 	fn contains(asset: &Asset, origin: &Location) -> bool {
-		matches!(asset.id.0.unpack(), (0, [])) &&
-			matches!(origin.unpack(), (1, [Teyrchain(ASSET_HUB_PARA_ID)]))
+		matches!(asset.id.0.unpack(), (0, []))
+			&& matches!(origin.unpack(), (1, [Teyrchain(ASSET_HUB_PARA_ID)]))
 	}
 }
 
@@ -428,8 +428,9 @@ where
 {
 	fn try_convert(origin: RuntimeOrigin) -> Result<Location, RuntimeOrigin> {
 		origin.try_with_caller(|caller| match caller.try_into() {
-			Ok(SystemRawOrigin::Signed(who)) =>
-				Ok(Junction::AccountIndex64 { network: None, index: who.into() }.into()),
+			Ok(SystemRawOrigin::Signed(who)) => {
+				Ok(Junction::AccountIndex64 { network: None, index: who.into() }.into())
+			},
 			Ok(other) => Err(other.into()),
 			Err(other) => Err(other),
 		})