fix(test): avoid random collision in SimpleSetTest

Author: ben--

folly/container/test/heap_vector_types_test.cpp

@@ -193,12 +193,12 @@ TEST(HeapVectorTypes, SimpleSetTest) {
   EXPECT_FALSE(cs2.find(32) == cs2.end());
   EXPECT_TRUE(cs2.contains(32));
 
-  // Bad insert hint.
-  s2.insert(s2.begin() + 3, 33);
-  EXPECT_TRUE(s2.find(33) != s2.begin());
-  EXPECT_TRUE(s2.find(33) != s2.end());
+  // Bad insert hint. Use value outside random range (0-99999).
+  s2.insert(s2.begin() + 3, 100002);
+  EXPECT_TRUE(s2.find(100002) != s2.begin());
+  EXPECT_TRUE(s2.find(100002) != s2.end());
   check_invariant(s2);
-  s2.erase(33);
+  s2.erase(100002);
   check_invariant(s2);
 
   it = s2.find(32);