Add test for for kt42457 wrong behaviour. Align runtime concatenation with it

#KT-42457

compiler/testData/codegen/bytecodeText/stringOperations/kt42457_old.kt

@@ -0,0 +1,20 @@
+// IGNORE_BACKEND_FIR: JVM_IR
+// KOTLIN_CONFIGURATION_FLAGS: STRING_CONCAT=indy-with-constants
+// JVM_TARGET: 9
+// FILE: JavaClass.java
+
+public class JavaClass {
+    public String toString() {
+        return null;
+    }
+}
+
+// FILE: Kotlin.kt
+fun box() {
+    val toString: String? = JavaClass().toString()
+    val template: String = "${JavaClass()}"
+}
+// 0 INVOKEDYNAMIC makeConcat
+// 1 JavaClass.toString
+// 1 String.valueOf
+// 0 append