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

pezbridges/modules/teyrchains/src/weights_ext.rs

@@ -104,9 +104,9 @@ pub trait WeightInfoExt: WeightInfo {
 
 	/// Returns weight that needs to be accounted when storage proof of given size is received.
 	fn storage_proof_size_overhead(extra_proof_bytes: u32) -> Weight {
-		let extra_byte_weight = (Self::submit_teyrchain_heads_with_16kb_proof() -
-			Self::submit_teyrchain_heads_with_1kb_proof()) /
-			(15 * 1024);
+		let extra_byte_weight = (Self::submit_teyrchain_heads_with_16kb_proof()
+			- Self::submit_teyrchain_heads_with_1kb_proof())
+			/ (15 * 1024);
 		extra_byte_weight.saturating_mul(extra_proof_bytes as u64)
 	}
 }