Revert "Comment out stop all test"

This reverts commit 8f183a2.

Author: adazem009

test/engine/engine_test.cpp

@@ -1863,7 +1863,7 @@ TEST(EngineTest, BroadcastsProject)
     ASSERT_EQ(GET_VAR(stage, "test5")->value().toString(), "2 2 0 0");
 }*/
 
-/*TEST(EngineTest, StopAll)
+TEST(EngineTest, StopAll)
 {
     Project p("stop_all.sb3");
     ASSERT_TRUE(p.load());
@@ -1877,7 +1877,7 @@ TEST(EngineTest, BroadcastsProject)
     ASSERT_VAR(stage, "i");
     ASSERT_EQ(GET_VAR(stage, "i")->value().toInt(), 11);
     ASSERT_FALSE(engine->isRunning());
-}*/
+}
 
 TEST(EngineTest, StopAllBypass)
 {