[en] Prevent nonsense disambiguation or give a warning: one token has two actions

[MikeUnwalla]

Neither testrules nor Maven gives me a warning about this nonsense disambiguation:

<rule id="POS_ADD_TEST" name="Add a POS">
    <pattern>
        <token>tester</token>
    </pattern>
    <disambig action="add"><wd pos="MYPOS"/><wd pos="MYPOS"/></disambig>
</rule>

Do not permit a rule that has more actions than tokens in the pattern or more actions than tokens in the marked section.

Same problem with or without a marker.