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-support/src/bounds.rs

@@ -151,8 +151,8 @@ impl DataProviderBounds {
 	/// Returns true if `given_size` or `given_count` exhausts `self.size` or `self_count`,
 	/// respectively.
 	pub fn exhausted(self, given_size: Option<SizeBound>, given_count: Option<CountBound>) -> bool {
-		self.count_exhausted(given_count.unwrap_or(CountBound::zero())) ||
-			self.size_exhausted(given_size.unwrap_or(SizeBound::zero()))
+		self.count_exhausted(given_count.unwrap_or(CountBound::zero()))
+			|| self.size_exhausted(given_size.unwrap_or(SizeBound::zero()))
 	}
 
 	/// Ensures the given encode-able slice meets both the length and count bounds.