[tests] Add test data for KT-55281

compiler/testData/codegen/box/builderInference/issues/kt55281.kt

@@ -0,0 +1,31 @@
+// ISSUE: KT-55281
+
+// IGNORE_LIGHT_ANALYSIS
+// IGNORE_BACKEND_K2: ANY
+// REASON: red code (see corresponding diagnostic test)
+
+fun box(): String {
+    build {
+        this as DerivedBuildee<*>
+        consumeNullableAny(getTypeVariable())
+    }
+    return "OK"
+}
+
+
+
+
+class TargetType
+
+fun consumeNullableAny(value: Any?) {}
+
+open class Buildee<TV> {
+    fun getTypeVariable(): TV = storage
+    private var storage: TV = null as TV
+}
+
+class DerivedBuildee<TA>: Buildee<TA>()
+
+fun <PTV> build(instructions: Buildee<PTV>.() -> Unit): Buildee<PTV> {
+    return DerivedBuildee<PTV>().apply(instructions)
+}