New J2K: correctly handle vararg annotation parameter of external Java class

#KT-31726 fixed

j2k/testData/JavaApi.java

@@ -123,4 +123,8 @@ public class JavaClass {
     public int get(int p) {
         return 0;
     }
+}
+
+public @interface SpecialExternal {
+    String[] names(); //array is used
 }

nj2k/src/org/jetbrains/kotlin/nj2k/conversions/AnnotationConversion.kt

@@ -5,9 +5,9 @@
 
 package org.jetbrains.kotlin.nj2k.conversions
 
+import com.intellij.psi.PsiArrayType
 import com.intellij.psi.PsiClass
 import com.intellij.psi.PsiMethod
-import org.jetbrains.kotlin.load.java.structure.JavaArrayType
 import org.jetbrains.kotlin.nj2k.NewJ2kConverterContext
 import org.jetbrains.kotlin.nj2k.primaryConstructor
 import org.jetbrains.kotlin.nj2k.toExpression
@@ -41,7 +41,6 @@ class AnnotationConversion(private val context: NewJ2kConverterContext) : Recurs
                                 .map { JKAnnotationParameterImpl(it) }
                         annotationParameter is JKAnnotationNameParameter
                                 && annotation.isVarargsArgument(annotationParameter.name.value)
-                                && annotation.classSymbol.target is JKClass
                                 && annotationParameter.value !is JKKtAnnotationArrayInitializerExpression -> {
                             listOf(
                                 JKAnnotationNameParameterImpl(
@@ -68,7 +67,7 @@ class AnnotationConversion(private val context: NewJ2kConverterContext) : Recurs
     }
 
     private fun PsiMethod.isVarArgsAnnotationMethod(isNamedArgument: Boolean) =
-        isVarArgs || returnType is JavaArrayType || name == "value" && !isNamedArgument
+        isVarArgs || returnType is PsiArrayType || name == "value" && !isNamedArgument
 
     private fun JKParameter.isVarArgsAnnotationParameter(isNamedArgument: Boolean) =
         isVarArgs || type.type.isArrayType() || name.value == "value" && !isNamedArgument

nj2k/testData/newJ2k/annotations/kt-31726.java

@@ -1,7 +1,12 @@
+import javaApi.SpecialExternal;
+
 //Annotation class:
 public @interface Special {
     String[] names(); //array is used
 }
 //Class with annotation:
 @Special(names = "name1")
-public class JClass {}
+public class JClass {}
+
+@SpecialExternal(names = "name1")
+public class JClass2 {}

nj2k/testData/newJ2k/annotations/kt-31726.kt

@@ -1,6 +1,11 @@
+import javaApi.SpecialExternal
+
 //Annotation class:
 annotation class Special(val names: Array<String> //array is used
 ) //Class with annotation:
 
 @Special(names = ["name1"])
-class JClass
+class JClass
+
+@SpecialExternal(names = ["name1"])
+class JClass2