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/teyrchains/runtimes/people/people-pezkuwichain/src/weights/xcm/mod.rs

@@ -43,8 +43,9 @@ impl WeighAssets for AssetFilter {
 					WildFungibility::Fungible => weight,
 					// Magic number 2 has to do with the fact that we could have up to 2 times
 					// MaxAssetsIntoHolding in the worst-case scenario.
-					WildFungibility::NonFungible =>
-						weight.saturating_mul((MaxAssetsIntoHolding::get() * 2) as u64),
+					WildFungibility::NonFungible => {
+						weight.saturating_mul((MaxAssetsIntoHolding::get() * 2) as u64)
+					},
 				},
 				AllCounted(count) => weight.saturating_mul(MAX_ASSETS.min(*count as u64)),
 				AllOfCounted { count, .. } => weight.saturating_mul(MAX_ASSETS.min(*count as u64)),