StreamApiUtil: fix addition of map operation when object-object cast is involved

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamApiMigration/afterCollectCast.java

@@ -0,0 +1,12 @@
+// "Replace with collect" "true"
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class Main {
+  List<String> getStrings(List<?> list) {
+      List<String> result = list.stream().filter(o -> o instanceof String).map(o -> (String) o).collect(Collectors.toList());
+      return result;
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamApiMigration/beforeCollectCast.java

@@ -0,0 +1,18 @@
+// "Replace with collect" "true"
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Main {
+  List<String> getStrings(List<?> list) {
+    List<String> result = new ArrayList<>();
+    for (Object o : li<caret>st) {
+      if (o instanceof String) {
+        String s = (String) o;
+        result.add(s);
+
+      }
+    }
+    return result;
+  }
+}