Add monkey_test to input presubmit

Now that it has been in postsubmit for a bit, add it to presubmit.

Bug: 328347986
Change-Id: I758366288aaecddf6a7637c98e8dabe94d96df88
Test: none
diff --git a/services/inputflinger/TEST_MAPPING b/services/inputflinger/TEST_MAPPING
index 5ab4e71..a4dd909 100644
--- a/services/inputflinger/TEST_MAPPING
+++ b/services/inputflinger/TEST_MAPPING
@@ -146,6 +146,9 @@
           "include-filter": "android.security.cts.Poc19_03#testPocBug_115739809"
         }
       ]
+    },
+    {
+      "name": "monkey_test"
     }
   ],
   "postsubmit": [