PS: Add another missing flow found by Chanel.

Author: MathiasVP

powershell/ql/test/library-tests/dataflow/params/test.ps1

@@ -36,4 +36,13 @@ ThreeArgs -z $third -y $second $first
 ThreeArgs -z $third $second -x $first
 ThreeArgs -z $third -x $first $second
 ThreeArgs -z $third $first -y $second
-ThreeArgs -z $third -y $second $first
+ThreeArgs -z $third -y $second $first
+
+function Invoke-InvokeExpressionInjection2
+{
+    param($UserInput)
+    Sink $UserInput # $ MISSING: hasValueFlow=1
+}
+
+$input = Source "1"
+Invoke-InvokeExpressionInjection2 -UserInput $input