[FIR] KT-56665: Filter-out valid cycles

^KT-56665 Fixed

Merge-request: KT-MR-8861
Merged-by: Nikolay Lunyak <Nikolay.Lunyak@jetbrains.com>

compiler/testData/diagnostics/tests/kt56665.kt

@@ -0,0 +1,11 @@
+// FIR_IDENTICAL
+
+private typealias Bar = Foo<Gau>
+internal class Gau : Bar
+
+internal class Gau2 : Bar2
+private typealias Bar2 = Foo<Gau2>
+
+//internal class Gau : Foo<Gau>
+
+interface Foo<T>

compiler/testData/diagnostics/tests/kt56665.txt

@@ -0,0 +1,24 @@
+package
+
+public interface Foo</*0*/ T> {
+    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
+}
+
+internal final class Gau : Bar /* = Foo<Gau> */ {
+    public constructor Gau()
+    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
+}
+
+internal final class Gau2 : Bar2 /* = Foo<Gau2> */ {
+    public constructor Gau2()
+    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
+}
+private typealias Bar = Foo<Gau>
+private typealias Bar2 = Foo<Gau2>
+