[FIR] Fix collecting member candidates on receiver with smartcast

^KT-51460 Fixed
^KT-51827

compiler/testData/codegen/box/fakeOverride/fakeOverrideInAnonymousObject.kt

@@ -0,0 +1,26 @@
+// TARGET_BACKEND: JVM_IR
+interface JPanel {
+    val result: String
+}
+
+open class ActivePanel : JPanel {
+    override var result: String = ""
+
+    fun fire(event: String) {
+        result = event
+    }
+}
+
+class Test {
+    val panel: JPanel
+
+    init {
+        panel = object : ActivePanel() {}
+
+        panel.fire("OK")
+    }
+}
+
+fun box(): String {
+    return Test().panel.result
+}

compiler/testData/codegen/box/smartCasts/resolveToMemberOfSuperclass_overrideWithDifferentType.kt

@@ -0,0 +1,32 @@
+// TARGET_BACKEND: JVM_IR
+// IGNORE_BACKEND: JVM_IR
+// ISSUE: KT-51460, KT-51827
+
+open class Base {
+    protected open val a: CharSequence
+        get() = "Fail: Base"
+
+
+    fun test(other: Base): String {
+        return when (other) {
+            is Derived_1 -> other.a.toString()
+            is Derived_2 -> other.a.toString()
+            else -> "Fail: not Derived"
+        }
+    }
+}
+
+class Derived_1: Base() {
+    override val a: String
+        get() = "Fail: Derived_1"
+}
+
+class Derived_2: Base() {
+    override val a: String
+        get() = "OK"
+}
+
+fun box(): String {
+    val x = Derived_2()
+    return x.test(x)
+}

compiler/testData/codegen/box/smartCasts/resolveToMemberOfSuperclass_overrideWithSameType.kt

@@ -0,0 +1,31 @@
+// TARGET_BACKEND: JVM_IR
+// ISSUE: KT-51460
+
+open class Base {
+    protected open val a: CharSequence
+        get() = "Fail: Base"
+
+
+    fun test(other: Base): String {
+        return when (other) {
+            is Derived_1 -> other.a.toString()
+            is Derived_2 -> other.a.toString()
+            else -> "Fail: not Derived"
+        }
+    }
+}
+
+class Derived_1: Base() {
+    override val a: CharSequence
+        get() = "Fail: Derived_1"
+}
+
+class Derived_2: Base() {
+    override val a: CharSequence
+        get() = "OK"
+}
+
+fun box(): String {
+    val x = Derived_2()
+    return x.test(x)
+}

compiler/testData/codegen/box/smartCasts/toStringOnReceiverWIthSmartcast.kt

@@ -0,0 +1,29 @@
+// TARGET_BACKEND: JVM_IR
+// FILE: A.java
+public class A {
+    @Override
+    public String toString() {
+        return "O";
+    }
+}
+
+// FILE: B.java
+public class B {
+    @Override
+    public String toString() {
+        return "K";
+    }
+}
+
+// FILE: main.kt
+fun test(x: Any): String {
+    return when (x) {
+        is A -> x.toString()
+        is B -> x.toString()
+        else -> "fail"
+    }
+}
+
+fun box(): String {
+    return test(A()) + test(B())
+}