JVM_IR: do not generate two nullary constructors

when the primary constructor with @JvmOverloads has default values for
all arguments.

compiler/testData/codegen/box/jvmOverloads/primaryConstructorWithAllDefaults.kt

@@ -0,0 +1,12 @@
+// TARGET_BACKEND: JVM
+
+// WITH_RUNTIME
+
+class C @kotlin.jvm.JvmOverloads constructor(s1: String = "O", s2: String = "K") {
+    public val status: String = s1 + s2
+}
+
+fun box(): String {
+    val c = (C::class.java.getConstructor().newInstance())
+    return c.status
+}