fix(core): member trait idempotencyToken detection

Author: kuhe

.changeset/wise-nails-design.md

@@ -0,0 +1,5 @@
+---
+"@smithy/core": patch
+---
+
+fix detection of member idempotencyToken trait

packages/core/src/submodules/schema/schemas/NormalizedSchema.ts

@@ -37,10 +37,7 @@ export class NormalizedSchema implements INormalizedSchema {
    * @param ref - a polymorphic SchemaRef to be dereferenced/normalized.
    * @param memberName - optional memberName if this NormalizedSchema should be considered a member schema.
    */
-  private constructor(
-    readonly ref: SchemaRef,
-    private memberName?: string
-  ) {
+  private constructor(readonly ref: SchemaRef, private memberName?: string) {
     const traitStack = [] as SchemaTraits[];
     let _ref = ref;
     let schema = ref;