Move tests for builder inference into the corresponding directory

compiler/testData/codegen/box/inference/builderInference/kt41164.kt

@@ -0,0 +1,24 @@
+// ISSUE: KT-41164
+// WITH_RUNTIME
+
+import kotlin.experimental.ExperimentalTypeInference
+
+interface MyProducerScope<in E>
+interface MyFlow<out T>
+
+fun <K> select(x: K, y: K): K = x
+@OptIn(ExperimentalTypeInference::class)
+fun <T> myCallbackFlow(@BuilderInference block: MyProducerScope<T>.() -> Unit): MyFlow<T> = null!!
+fun MyProducerScope<*>.myAwaitClose(block: () -> Unit = {}) {}
+fun <E> myEmptyFlow(): MyFlow<E> = null!!
+
+fun test(): MyFlow<Int> {
+    return select(
+        myCallbackFlow {
+            myAwaitClose {}
+        },
+        myEmptyFlow()
+    )
+}
+
+fun box(): String = "OK"