Stall tracking tests look flaky

[vaind]

Description

https://github.com/getsentry/sentry-react-native/actions/runs/9582859697/job/26422794329?pr=3846

FAIL test/tracing/stalltracking.iteration.test.ts
  ● Iteration › Stall tracking should update _stallCount and _totalStallTime when timeout condition is met

    expect(received).toBeGreaterThanOrEqual(expected)

    Expected: >= 100
    Received:    99

      [44](https://github.com/getsentry/sentry-react-native/actions/runs/9582859697/job/26422794329?pr=3846#step:6:45) |     // Check if _stallCount and _totalStallTime have been updated as expected.
      [45](https://github.com/getsentry/sentry-react-native/actions/runs/9582859697/job/26422794329?pr=3846#step:6:46) |     expect(stallTracking['_stallCount']).toBe(1);
    > [46](https://github.com/getsentry/sentry-react-native/actions/runs/9582859697/job/26422794329?pr=3846#step:6:47) |     expect(stallTracking['_totalStallTime']).toBeGreaterThanOrEqual(
         |                                              ^
      [47](https://github.com/getsentry/sentry-react-native/actions/runs/9582859697/job/26422794329?pr=3846#step:6:48) |       Math.round(totalTimeTaken - LOOP_TIMEOUT_INTERVAL_MS),
      [48](https://github.com/getsentry/sentry-react-native/actions/runs/9582859697/job/26422794329?pr=3846#step:6:49) |     );
      [49](https://github.com/getsentry/sentry-react-native/actions/runs/9582859697/job/26422794329?pr=3846#step:6:50) |   });

      at Object.toBeGreaterThanOrEqual (test/tracing/stalltracking.iteration.test.ts:46:46)

[vaind]

I haven't found a good label for this (tests, ci, debt, ...) so leaving unlabeled