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/parameters/src/tests/mock.rs

@@ -113,9 +113,9 @@ mod custom_origin {
 			}
 
 			match key {
-				RuntimeParametersKey::SomEWeirdSPElLInGS(_) |
-				RuntimeParametersKey::Nis(_) |
-				RuntimeParametersKey::Pallet1(_) => ensure_root(origin.clone()),
+				RuntimeParametersKey::SomEWeirdSPElLInGS(_)
+				| RuntimeParametersKey::Nis(_)
+				| RuntimeParametersKey::Pallet1(_) => ensure_root(origin.clone()),
 				RuntimeParametersKey::Pallet2(_) => ensure_signed(origin.clone()).map(|_| ()),
 			}
 			.map_err(|_| origin)