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/network/protocol/src/lib.rs

@@ -346,8 +346,9 @@ macro_rules! impl_versioned_validation_try_from {
 			fn try_from(x: &'a $from) -> Result<$out, Self::Error> {
 				#[allow(unreachable_patterns)] // when there is only one variant
 				match x {
-					ValidationProtocols::V3($v3_pat) =>
-						Ok(ValidationProtocols::V3($v3_out.clone())),
+					ValidationProtocols::V3($v3_pat) => {
+						Ok(ValidationProtocols::V3($v3_out.clone()))
+					},
 					_ => Err(crate::WrongVariant),
 				}
 			}