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/node/core/provisioner/src/lib.rs

@@ -396,8 +396,9 @@ fn note_provisionable_data(
 	provisionable_data: ProvisionableData,
 ) {
 	match provisionable_data {
-		ProvisionableData::Bitfield(_, signed_bitfield) =>
-			per_relay_parent.signed_bitfields.push(signed_bitfield),
+		ProvisionableData::Bitfield(_, signed_bitfield) => {
+			per_relay_parent.signed_bitfields.push(signed_bitfield)
+		},
 		// We choose not to punish these forms of misbehavior for the time being.
 		// Risks from misbehavior are sufficiently mitigated at the protocol level
 		// via reputation changes. Punitive actions here may become desirable