java completion: fix double T[] suggestion in toArray((<caret>)casted)

GitOrigin-RevId: 8c56d0e78ae8f0d027ca428165753b5db2fda543

java/java-impl/src/com/intellij/codeInsight/ExpectedTypesProvider.java

@@ -1074,6 +1074,9 @@ public class ExpectedTypesProvider {
           if (params.length <= index) continue;
           PsiParameter param = params[index];
           PsiType paramType = getParameterType(param, substitutor);
+          if (method.hasTypeParameters() && PsiTypesUtil.mentionsTypeParameters(paramType, ContainerUtil.newHashSet(method.getTypeParameters()))) {
+            continue;
+          }
           TailType tailType = getMethodArgumentTailType(argument, index, method, substitutor, params);
           ExpectedTypeInfoImpl info = createInfoImpl(paramType, ExpectedTypeInfo.TYPE_OR_SUBTYPE, paramType,
                                                      tailType, method, getPropertyName(param));

java/java-tests/testData/codeInsight/completion/smartType/CastInToArrayCallWithUnresolvedType.java

@@ -0,0 +1,8 @@
+public class SomeClass {
+
+    {
+        java.util.List<Unresolved> l;
+        Unresolved[] a = l.toArray((<caret>)expr);
+    }
+
+}

java/java-tests/testSrc/com/intellij/java/codeInsight/completion/SmartType18CompletionTest.java

@@ -298,4 +298,6 @@ public void testConvertToObjectStream() {
   public void testNestedCollectorsCounting() { doTest(false); }
 
   public void testFilterInaccessibleConstructors() { doAntiTest(); }
+
+  public void testCastInToArrayCallWithUnresolvedType() { doAntiTest(); }
 }