Warnings when using Kotlin 2.3.0-RC

[ansman]

When using repeated fields, wire generates this code:

var floats: MutableList<Float>? = null
val unknownFields = reader.forEachTag { tag ->
  when (tag) {
    1 -> {
      if (floats == null) {
        val minimumByteSize = 4
        val initialCapacity = (reader.nextFieldMinLengthInBytes() / minimumByteSize)
          .coerceAtMost(Int.MAX_VALUE.toLong())
          .toInt()
        floats = ArrayList(initialCapacity)
      }
      floats!!.add(ProtoAdapter.FLOAT.decode(reader))
    }
}

With kotlin 2.3, this leads to a warning because floats is proven to be non null.

[ansman]

I found a temporary workaround:

tasks.withType<WireTask>().configureEach {
    doLast {
        outputDirectories.files
            .asSequence()
            .flatMap { it.walkTopDown() }
            .filter { it.isFile && it.extension == "kt" }
            .forEach { ktFile ->
                val content = ktFile.readText()
                val updatedContent = content.replace(
                    "\"RUNTIME_ANNOTATION_NOT_SUPPORTED\",\n",
                    "\"RUNTIME_ANNOTATION_NOT_SUPPORTED\",\n  \"UNNECESSARY_NOT_NULL_ASSERTION\",\n",
                )
                ktFile.writeText(updatedContent)
            }
    }
}