allow duplicate throws (IDEADEV-41667)

java/java-tests/testData/inspection/javaDocInspection/ignoreDuplicateThrows/src/Test.java

@@ -0,0 +1,9 @@
+class Test {
+/**
+ *@throws ArrayIndexOutOfBoundsException in some case
+ *@throws ArrayIndexOutOfBoundsException and in some other case
+ */
+  void foo() throws ArrayIndexOutOfBoundsException {
+
+  }
+}