[FIR] Support sealed class inheritors in multiple files

compiler/testData/diagnostics/tests/sealed/DerivedTopLevel.fir.kt

@@ -1,7 +1,7 @@
 sealed class Base
 
 class Derived: Base() {
-    class Derived2: <!SEALED_SUPERTYPE!>Base<!>()
+    class Derived2: Base()
 }
 
 fun test() {

compiler/testData/diagnostics/tests/sealed/ExhaustiveWithFreedom.fir.kt

@@ -10,14 +10,14 @@ sealed class Base {
 
 // FILE: B.kt
 
-class B : <!HIDDEN!>Base<!>()
+class B : Base()
 
 // FILE: Container.kt
 
 class Containter {
-    class C : <!HIDDEN, SEALED_SUPERTYPE!>Base<!>()
+    class C : Base()
 
-    inner class D : <!HIDDEN, SEALED_SUPERTYPE!>Base<!>()
+    inner class D : Base()
 }
 
 // FILE: main.kt

compiler/testData/diagnostics/tests/sealed/MultipleFiles_enabled.fir.kt

@@ -13,21 +13,21 @@ sealed class Base {
 
 package foo
 
-class B : <!HIDDEN!>Base<!>()
+class B : Base()
 
 // FILE: c.kt
 
 package foo
 
 class Container {
-    class C : <!HIDDEN, SEALED_SUPERTYPE!>Base<!>()
+    class C : Base()
 
-    inner class D : <!HIDDEN, SEALED_SUPERTYPE!>Base<!>()
+    inner class D : Base()
 
-    val anon = object : <!HIDDEN, SEALED_SUPERTYPE_IN_LOCAL_CLASS!>Base<!>() {} // Should be an error
+    val anon = object : <!SEALED_SUPERTYPE_IN_LOCAL_CLASS!>Base<!>() {} // Should be an error
 
     fun someFun() {
-        class LocalClass : <!HIDDEN, SEALED_SUPERTYPE_IN_LOCAL_CLASS!>Base<!>() {} // Should be an error
+        class LocalClass : <!SEALED_SUPERTYPE_IN_LOCAL_CLASS!>Base<!>() {} // Should be an error
     }
 }
 
@@ -37,4 +37,4 @@ package bar
 
 import foo.Base
 
-class E : <!HIDDEN!>Base<!>()
+class E : <!HIDDEN, SEALED_SUPERTYPE!>Base<!>()

compiler/testData/diagnostics/tests/sealed/NestedSealedWithoutRestrictions.fir.kt

@@ -1,39 +0,0 @@
-// ISSUE: KT-13495
-// !LANGUAGE: +AllowSealedInheritorsInDifferentFilesOfSamePackage
-// !DIAGNOSTICS: -UNUSED_VARIABLE
-
-// FILE: base.kt
-
-package foo
-
-class Container {
-    sealed class Base
-}
-
-// FILE: a.kt
-
-package foo
-
-class A : <!HIDDEN, SEALED_SUPERTYPE!>Container.Base<!>()
-
-// FILE: b.kt
-
-package foo
-
-class BContainer {
-    class B : <!HIDDEN, SEALED_SUPERTYPE!>Container.Base<!>()
-
-    inner class C : <!HIDDEN, SEALED_SUPERTYPE!>Container.Base<!>()
-}
-
-// FILE: test.kt
-
-package foo
-
-fun test(base: Container.Base) {
-    val x = when (base) {
-        is A -> 1
-        is BContainer.B -> 2
-        is BContainer.C -> 3
-    }
-}

compiler/testData/diagnostics/tests/sealed/NestedSealedWithoutRestrictions.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // ISSUE: KT-13495
 // !LANGUAGE: +AllowSealedInheritorsInDifferentFilesOfSamePackage
 // !DIAGNOSTICS: -UNUSED_VARIABLE

compiler/testData/diagnostics/tests/sealed/NeverDerivedFromNested.fir.kt

@@ -2,7 +2,7 @@ class A {
     sealed class Base
 }
 
-class Derived : <!SEALED_SUPERTYPE!>A.Base<!>()
+class Derived : A.Base()
 
 fun test() {
     class DerivedLocal : <!SEALED_SUPERTYPE_IN_LOCAL_CLASS!>A.Base<!>()