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/primitives/runtime/src/chain.rs

@@ -44,8 +44,9 @@ impl<ChainCall: Clone + Codec> EncodedOrDecodedCall<ChainCall> {
 	/// Returns decoded call.
 	pub fn to_decoded(&self) -> Result<ChainCall, codec::Error> {
 		match self {
-			Self::Encoded(ref encoded_call) =>
-				ChainCall::decode(&mut &encoded_call[..]).map_err(Into::into),
+			Self::Encoded(ref encoded_call) => {
+				ChainCall::decode(&mut &encoded_call[..]).map_err(Into::into)
+			},
 			Self::Decoded(ref decoded_call) => Ok(decoded_call.clone()),
 		}
 	}
@@ -53,8 +54,9 @@ impl<ChainCall: Clone + Codec> EncodedOrDecodedCall<ChainCall> {
 	/// Converts self to decoded call.
 	pub fn into_decoded(self) -> Result<ChainCall, codec::Error> {
 		match self {
-			Self::Encoded(encoded_call) =>
-				ChainCall::decode(&mut &encoded_call[..]).map_err(Into::into),
+			Self::Encoded(encoded_call) => {
+				ChainCall::decode(&mut &encoded_call[..]).map_err(Into::into)
+			},
 			Self::Decoded(decoded_call) => Ok(decoded_call),
 		}
 	}