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/client/executor/src/wasm_runtime.rs

@@ -303,7 +303,7 @@ where
 	}
 
 	match wasm_method {
-		WasmExecutionMethod::Compiled { instantiation_strategy } =>
+		WasmExecutionMethod::Compiled { instantiation_strategy } => {
 			pezsc_executor_wasmtime::create_runtime::<H>(
 				blob,
 				pezsc_executor_wasmtime::Config {
@@ -322,7 +322,8 @@ where
 					},
 				},
 			)
-			.map(|runtime| -> Box<dyn WasmModule> { Box::new(runtime) }),
+			.map(|runtime| -> Box<dyn WasmModule> { Box::new(runtime) })
+		},
 	}
 }