KT-44378 don't generate no-arg constructor for sealed classes

compiler/testData/codegen/bytecodeListing/sealedClassConstructorWithDefaultParams.kt

@@ -0,0 +1,3 @@
+// !LANGUAGE: +AllowSealedInheritorsInDifferentFilesOfSamePackage
+
+sealed class Test(val x: Int = 0)

compiler/testData/codegen/bytecodeListing/sealedClassConstructorWithDefaultParams.txt

@@ -0,0 +1,8 @@
+@kotlin.Metadata
+public abstract class Test {
+    // source: 'sealedClassConstructorWithDefaultParams.kt'
+    private final field x: int
+    public method <init>(p0: int): void
+    public synthetic method <init>(p0: int, p1: int, p2: kotlin.jvm.internal.DefaultConstructorMarker): void
+    public final method getX(): int
+}