Summary:
The test is flaky because the timeouts for the waits are too low for TSAN. Increased them from 10s -> 30s.
Jira: DB-17698

Test Plan: `./yb_build.sh tsan --cxx-test integration-tests_load_balancer_mini_cluster-test --gtest_filter LoadBalancerMiniClusterTest.TaskTracker -n 100`

Reviewers: zdrudi

Reviewed By: zdrudi

Subscribers: ybase

Differential Revision: https://phorge.dev.yugabyte.com/D45582