Don't generate empty constructor if there is secondary one with empty parameter list

compiler/testData/diagnostics/tests/secondaryConstructors/noDefaultIfEmptySecondary.kt

@@ -0,0 +1,4 @@
+// do not report generate empty synthetic constructor by primary as it leads to CONFLICTING_JVM_DECLARATIONS
+class A(val x: Int = 1, val y: Int = 2) {
+    constructor(): this(0, 0) {}
+}

compiler/testData/diagnostics/tests/secondaryConstructors/noDefaultIfEmptySecondary.txt

@@ -0,0 +1,11 @@
+package
+
+internal final class A {
+    public constructor A()
+    public constructor A(/*0*/ x: kotlin.Int = ..., /*1*/ y: kotlin.Int = ...)
+    internal final val x: kotlin.Int
+    internal final val y: kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}