[BUG] Test name mismatch

[noCharger]

What is the bug?

https://github.com/opensearch-project/opensearch-spark/blob/f283df840170fdb305324f042de303b03e7e0190/integ-test/src/integration/scala/org/opensearch/flint/spark/FlintSparkCoveringIndexITSuite.scala#L101C1-L120C4

  test("incremental refresh covering index successfully") {
    flint
      .coveringIndex()
      .name(testIndex)
      .onTable(testTable)
      .addIndexColumns("name", "age")
      .options(FlintSparkIndexOptions(Map("auto_refresh" -> "true")))
      .create()

    val jobId = flint.refreshIndex(testFlintIndex)
    jobId shouldBe defined

    val job = spark.streams.get(jobId.get)
    failAfter(streamingTimeout) {
      job.processAllAvailable()
    }

    val indexData = flint.queryIndex(testFlintIndex)
    checkAnswer(indexData, Seq(Row("Hello", 30), Row("World", 25)))
  }

Test name is incremental refresh but it actually runs auto refresh. Need to add test case for incremental refresh accordingly