Fix missing Product Variant webhook events group

Add PRODUCT_VARIANT to the multiWords list so variant events appear
as a separate object group in the webhook events UI. Previously,
Product Variant events were not visible at all.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: IKarbowiak

src/extensions/components/WebhookDetailsPage/components/WebhookEvents/utils.test.ts

@@ -12,8 +12,9 @@ describe("getWebhookTypes", () => {
   it("should map array of enum keys to objects with events ", () => {
     const TestWebhookTypes = getWebhookTypes(TestKeys);
 
-    expect(Object.keys(TestWebhookTypes)).toEqual(["DRAFT_ORDER", "PRODUCT"]);
+    expect(Object.keys(TestWebhookTypes)).toEqual(["DRAFT_ORDER", "PRODUCT", "PRODUCT_VARIANT"]);
     expect(TestWebhookTypes.DRAFT_ORDER).toEqual(["CREATED", "UPDATED"]);
-    expect(TestWebhookTypes.PRODUCT).toEqual(["CREATED", "UPDATED", "VARIANT_UPDATED"]);
+    expect(TestWebhookTypes.PRODUCT).toEqual(["CREATED", "UPDATED"]);
+    expect(TestWebhookTypes.PRODUCT_VARIANT).toEqual(["UPDATED"]);
   });
 });

src/extensions/components/WebhookDetailsPage/components/WebhookEvents/utils.ts

@@ -3,7 +3,7 @@ import { WebhookEventTypeAsyncEnum, WebhookEventTypeSyncEnum } from "@dashboard/
 type Actions = string[];
 
 export const getWebhookTypes = (webhookEvents: string[]) => {
-  const multiWords = ["DRAFT_ORDER", "GIFT_CARD", "ANY_EVENTS"];
+  const multiWords = ["DRAFT_ORDER", "GIFT_CARD", "ANY_EVENTS", "PRODUCT_VARIANT"];
 
   return webhookEvents.sort().reduce<Record<string, Actions>>((acc, key) => {
     const keywords = key.split("_");