[FE, Java resolve] Support inheritors of sealed Java type without permits clause

This fixes a false negative NO_ELSE_IN_WHEN in K2 and incidentally
also fixes a false positive NO_ELSE_IN_WHEN in K1 since the fix is in
the common code.

#KT-62491 Fixed

core/descriptors.runtime/src/org/jetbrains/kotlin/descriptors/runtime/structure/ReflectJavaClass.kt

@@ -133,10 +133,11 @@ class ReflectJavaClass(
     override val isSealed: Boolean
         get() = Java16SealedRecordLoader.loadIsSealed(klass) ?: false
 
-    override val permittedTypes: Collection<JavaClassifierType>
+    override val permittedTypes: Sequence<JavaClassifierType>
         get() = Java16SealedRecordLoader.loadGetPermittedSubclasses(klass)
             ?.map(::ReflectJavaClassifierType)
-            ?: emptyList()
+            ?.asSequence()
+            ?: emptySequence()
 
     override fun equals(other: Any?) = other is ReflectJavaClass && klass == other.klass