Incorrect behavior of ChangeDelta about kotlin-multiplatform-diff

[petertrr]

It seems that the problem was in not very clear API and our misuse of it. I.e., mergeOriginalRevised parameter has been set to false, and inline diff has been generated for newLine, while we were using oldLine. I can reproduce this problem like this:

fun test() {
        val generator = DiffRowGenerator.create()
            .showInlineDiffs(true)
            .mergeOriginalRevised(false)  // <- this is what I am talking about
            .inlineDiffByWord(false)
            .oldTag { _, f -> if (f) "[" else "]" }
            .newTag { _, f -> if (f) "<" else ">" }
            .build()
        val rows: List<DiffRow> = generator.generateDiffRows(
            listOf("Original line"),
            listOf("Original line ")
        )
        println(rows[0])
}

which prints

DiffRow(tag=CHANGE, oldLine=Original line, newLine=Original line< >)