[Segment Replication] [BUG] SegmentReplicationTargetServiceTests.testReplicationOnDone flaky test failure

[dreamer-89]

Describe the bug
I have seen this issue on CI server multiple times. This test might succeeding on retries but need to make it more consistent.

e.g. https://build.ci.opensearch.org/job/gradle-check/1943

REPRODUCE WITH: ./gradlew ':server:test' --tests "org.opensearch.indices.replication.SegmentReplicationTargetServiceTests.testReplicationOnDone" -Dtests.seed=7C5D31ACA05B2F46 -Dtests.security.manager=true -Dtests.jvm.argline="-XX:TieredStopAtLevel=1 -XX:ReservedCodeCacheSize=64m" -Dtests.locale=fi-FI -Dtests.timezone=America/Tortola -Druntime.java=17

org.opensearch.indices.replication.SegmentReplicationTargetServiceTests > testReplicationOnDone FAILED
    org.mockito.exceptions.verification.TooFewActualInvocations: 
    segmentReplicationTargetService.onNewCheckpoint(
        ReplicationCheckpoint{shardId=[index][0], primaryTerm=40, segmentsGen=2, seqNo=-1, version=7},
        <any>
    );
    Wanted 2 times:
    -> at org.opensearch.indices.replication.SegmentReplicationTargetServiceTests.testReplicationOnDone(SegmentReplicationTargetServiceTests.java:257)
    But was 1 time:
    -> at org.opensearch.indices.replication.SegmentReplicationTargetServiceTests.testReplicationOnDone(SegmentReplicationTargetServiceTests.java:251)
        at app//org.opensearch.indices.replication.SegmentReplicationTargetServiceTests.testReplicationOnDone(SegmentReplicationTargetServiceTests.java:257)

    com.carrotsearch.randomizedtesting.UncaughtExceptionError: Captured an uncaught exception in thread: Thread[id=152, name=opensearch[org.opensearch.indices.replication.SegmentReplicationTargetServiceTests][generic][T#1], state=RUNNABLE, group=TGRP-SegmentReplicationTargetServiceTests]

[mch2]

Closing - this test was replaced in #4225