Update test files for recursive workflow test case ReduceAndRecursion

Update test files for a recursive workflow test case ``ReduceAndRecursion``: replace IF node with ScopeIF node in recursive function. 

This test case is related to [MAGN-1905](http://adsk-oss.myjetbrains.com/youtrack/issue/MAGN-1905)
value changed from double to integer, can we please rename the variable to only "valueInWatchNode"