Refine 'isMoreSpecific' calculation

Choose member with better visibility, it's needed for proper calculation
of types intersection member scope

 #KT-10481 Fixed

compiler/testData/diagnostics/tests/smartCasts/intersectionScope/moreSpecificSetter.kt

@@ -0,0 +1,15 @@
+open class A {
+    open var value: Int = 4
+        protected set
+}
+
+class MutableA : A() {
+    override var value: Int = 4
+        public set
+}
+
+fun test(myA: A) {
+    if (myA is MutableA) {
+        <!DEBUG_INFO_SMARTCAST!>myA<!>.value = 5
+    }
+}

compiler/testData/diagnostics/tests/smartCasts/intersectionScope/moreSpecificSetter.txt

@@ -0,0 +1,19 @@
+package
+
+public fun test(/*0*/ myA: A): kotlin.Unit
+
+public open class A {
+    public constructor A()
+    public open var value: 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
+}
+
+public final class MutableA : A {
+    public constructor MutableA()
+    public open override /*1*/ var value: 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
+}

compiler/testData/diagnostics/tests/smartCasts/intersectionScope/moreSpecificVisibility.kt

@@ -0,0 +1,16 @@
+abstract class A {
+    abstract protected fun foo(): String
+    abstract protected val bar: String
+}
+
+interface B {
+    fun foo(): String
+    val bar: String
+}
+
+fun test(x: A) {
+    if (x is B) {
+        <!DEBUG_INFO_SMARTCAST!>x<!>.foo()
+        <!DEBUG_INFO_SMARTCAST!>x<!>.bar
+    }
+}

compiler/testData/diagnostics/tests/smartCasts/intersectionScope/moreSpecificVisibility.txt

@@ -0,0 +1,20 @@
+package
+
+public fun test(/*0*/ x: A): kotlin.Unit
+
+public abstract class A {
+    public constructor A()
+    protected abstract val bar: kotlin.String
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    protected abstract fun foo(): kotlin.String
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public interface B {
+    public abstract val bar: kotlin.String
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public abstract fun foo(): kotlin.String
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}