JS: fix object expression constructor delegation to secondary constructors with default arguments (KT-30517 fixed)

compiler/testData/codegen/box/defaultArguments/constructor/kt30517.kt

@@ -0,0 +1,27 @@
+// IGNORE_BACKEND_FIR: JVM_IR
+
+open class Foo(val args: String){
+    constructor(arg: Any = 1) : this(arg.toString()) {
+    }
+}
+open class Base(val baseArgs: String)
+open class Bar(arg: Any = 1) : Base(arg.toString()) {
+    val args = arg.toString()
+}
+object TF : Foo() {}
+object TF2 : Foo(2) {}
+
+fun box(): String {
+    val f = object : Foo() {}
+    val f2 = object : Foo(2) {}
+    val b = object : Bar() {}
+
+    f.args.let { if (it != "1") return "Fail 1: $it" }
+    f2.args.let { if (it != "2") return "Fail 2: $it" }
+    TF.args.let { if (it != "1") return "Fail 3: $it" }
+    TF2.args.let { if (it != "2") return "Fail 4: $it" }
+    b.args.let { if (it != "1") return "Fail 5: $it" }
+    b.baseArgs.let { if (it != "1") return "Fail 6: $it" }
+
+    return "OK"
+}

compiler/testData/codegen/box/defaultArguments/constructor/objectExpressionDelegatingToSecondaryConstructor.kt

@@ -0,0 +1,22 @@
+// IGNORE_BACKEND_FIR: JVM_IR
+
+abstract class O(val value: String) {
+    constructor(o: Char = 'O') : this("$o")
+}
+
+abstract class K {
+    val value: String
+
+    constructor(k: Char = 'K') {
+        value = "$k"
+    }
+}
+
+fun box(): String {
+
+    val o = object : O() {}
+
+    val k = object : K() {}
+
+    return o.value + k.value
+}