`EventListenerTest.timeToFirstByteHttp1OverHttps` flaky

[JakeWharton]

EventListenerTest[jvm] > timeToFirstByteHttp1OverHttps()[jvm] FAILED
    org.opentest4j.AssertionFailedError: expected <452.0> to be close to <250.0> with delta of <100.0>, but was not
        at app//okhttp3.EventRecorder.takeEvent(EventRecorder.kt:109)
        at app//okhttp3.EventListenerTest.timeToFirstByte(EventListenerTest.kt:1856)
        at app//okhttp3.EventListenerTest.timeToFirstByteHttp1OverHttps(EventListenerTest.kt:1746)