Fix pagination test for conversations with API v2.14

The conversations pagination test was failing because it relied on
pre-existing conversations in the test account. When the default
Intercom API version was bumped from 2.11 to 2.14 in v7.0.0, the API
returned fewer conversations, causing the test to fail.

This fix adds a setup function that creates 2 test conversations
before running the pagination test, making the test reliable
regardless of the API version or existing data in the test account.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: steve-henry

tests/integration/pagination.test.ts

@@ -49,6 +49,23 @@ describe("Pagination", () => {
             limit: 2,
             perPage: 1,
             greaterThan: 1,
+            async setup() {
+                const contact = await client.contacts.create({
+                    external_id: randomString(),
+                });
+
+                await client.conversations.create({
+                    from: { id: contact.id, type: "user" },
+                    body: "Test conversation 1",
+                });
+
+                await client.conversations.create({
+                    from: { id: contact.id, type: "user" },
+                    body: "Test conversation 2",
+                });
+
+                return {};
+            },
         },
         {
             name: "notes",