JVM_IR indy-SAM conversions: add more tests

KT-44278 KT-26060 KT-42621

compiler/testData/codegen/box/invokedynamic/sam/streamApi1.kt

@@ -0,0 +1,13 @@
+// TARGET_BACKEND: JVM
+// JVM_TARGET: 1.8
+// SAM_CONVERSIONS: INDY
+// WITH_RUNTIME
+// FULL_JDK
+import java.util.stream.Collectors
+
+fun box(): String {
+    return listOf("o", "k")
+        .stream()
+        .map { it.toUpperCase() }
+        .collect(Collectors.joining())
+}

compiler/testData/codegen/box/invokedynamic/sam/streamApi2.kt

@@ -0,0 +1,21 @@
+// TARGET_BACKEND: JVM
+// JVM_TARGET: 1.8
+// SAM_CONVERSIONS: INDY
+// WITH_RUNTIME
+// FULL_JDK
+import java.util.stream.*
+
+fun box(): String {
+    val xs = IntStream.of(1, 1, 4, 5, 1, 4)
+        .map { a: Int -> a + 1 }
+        .map { a: Int -> a - 1 }
+        .filter { a: Int -> a > 3 }
+        .flatMap { a: Int -> IntStream.of(a, a, a) }
+        .boxed()
+        .collect(Collectors.toList())
+
+    if (xs != listOf(4, 4, 4, 5, 5, 5, 4, 4, 4))
+        return "Failed: xs=$xs"
+
+    return "OK"
+}