[FE] Consider derived class tag on caching substitution scopes

compiler/testData/diagnostics/tests/subtyping/delegatedConstructor.kt

@@ -0,0 +1,29 @@
+// FIR_IDENTICAL
+
+// MODULE: lib
+
+// FILE: lib.kt
+package lib
+
+abstract class Base<in T>
+
+
+// MODULE: test(lib)
+
+// FILE: foo.kt
+package test
+
+import lib.Base
+
+class Foo {
+    private inner class FooImpl : Base<Any?>()
+}
+
+// FILE: bar.kt
+package test
+
+import lib.Base
+
+class Bar {
+    private inner class BarImpl : Base<Any?>()
+}

compiler/testData/diagnostics/tests/subtyping/delegatedConstructor.txt

@@ -0,0 +1,46 @@
+// -- Module: <lib> --
+package
+
+package lib {
+
+    public abstract class Base</*0*/ in T> {
+        public constructor Base</*0*/ in 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
+    }
+}
+
+// -- Module: <test> --
+package
+
+package test {
+
+    public final class Bar {
+        public constructor Bar()
+        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 final inner class BarImpl : lib.Base<kotlin.Any?> {
+            public constructor BarImpl()
+            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 Foo {
+        public constructor Foo()
+        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 final inner class FooImpl : lib.Base<kotlin.Any?> {
+            public constructor FooImpl()
+            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
+        }
+    }
+}