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

pezcumulus/pezpallets/teyrchain-system/proc-macro/src/lib.rs

@@ -80,8 +80,9 @@ impl Parse for Input {
 
 fn crate_() -> Result<Ident, Error> {
 	match crate_name("pezcumulus-pezpallet-teyrchain-system") {
-		Ok(FoundCrate::Itself) =>
-			Ok(syn::Ident::new("pezcumulus_pezpallet_teyrchain_system", Span::call_site())),
+		Ok(FoundCrate::Itself) => {
+			Ok(syn::Ident::new("pezcumulus_pezpallet_teyrchain_system", Span::call_site()))
+		},
 		Ok(FoundCrate::Name(name)) => Ok(Ident::new(&name, Span::call_site())),
 		Err(e) => Err(Error::new(Span::call_site(), e)),
 	}