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/examples/authorization-tx-extension/src/mock.rs

@@ -99,8 +99,9 @@ mod example_runtime {
 
 		fn try_origin(o: RuntimeOrigin) -> Result<Self::Success, RuntimeOrigin> {
 			match o.clone().into() {
-				Ok(pezpallet_coownership::Origin::<Runtime>::Coowners(first, second)) =>
-					Ok((first, second)),
+				Ok(pezpallet_coownership::Origin::<Runtime>::Coowners(first, second)) => {
+					Ok((first, second))
+				},
 				_ => Err(o),
 			}
 		}