[#24346] ASH: Fix flaky test WaitStateITest.UniqueRpcRequestId on TSAN

Summary:
Inserting 10000 rows seems to be too slow for TSAN builds, this diff reduces
the number of rows to 1000
Jira: DB-13256

Test Plan: Jenkins: test regex: UniqueRpcRequestId

Reviewers: ishan.chhangani

Reviewed By: ishan.chhangani

Subscribers: svc_phabricator, ybase

Differential Revision: https://phorge.dev.yugabyte.com/D39043

src/yb/integration-tests/wait_states-itest.cc

@@ -211,7 +211,7 @@ class WaitStateITest : public pgwrapper::PgMiniTestBase {
 };
 
 TEST_F(WaitStateITest, UniqueRpcRequestId) {
-  const int NumKeys = 10000;
+  const int NumKeys = 1000;
   auto conn = ASSERT_RESULT(Connect());
   ASSERT_OK(conn.Execute("CREATE TABLE bankaccounts (id INT PRIMARY KEY, balance INT)"));
   ASSERT_OK(conn.Execute("CREATE INDEX bankaccountsidx ON bankaccounts (id, balance)"));