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/relayers/src/extension.rs

@@ -183,7 +183,9 @@ where
 		match call.is_sub_type() {
 			Some(UtilityCall::<Runtime>::batch_all { ref calls })
 				if calls.len() <= max_packed_calls as usize =>
-				calls.iter().collect(),
+			{
+				calls.iter().collect()
+			},
 			Some(_) => vec![],
 			None => vec![call],
 		}

pezbridges/primitives/relayers/src/registration.rs

@@ -71,8 +71,9 @@ impl<AccountId: Decode + Encode, LaneId: Decode + Encode> IdentifyAccount
 	fn into_account(self) -> Self::AccountId {
 		match self {
 			ExplicitOrAccountParams::Explicit(account_id) => account_id,
-			ExplicitOrAccountParams::Params(params) =>
-				PayRewardFromAccount::<(), AccountId, LaneId, ()>::rewards_account(params),
+			ExplicitOrAccountParams::Params(params) => {
+				PayRewardFromAccount::<(), AccountId, LaneId, ()>::rewards_account(params)
+			},
 		}
 	}
 }