Action with odk-instance-first-load event fires when adding new repeat

[garethbowen]

Expected Behaviour

Actions that are set to fire on odk-instance-first-load should not fire when adding a new repeat.

Observed Behaviour

They do.

Reproduction Steps

Form (XML or XLSX file):

<h:html xmlns="http://www.w3.org/2002/xforms"
        xmlns:h="http://www.w3.org/1999/xhtml">

    <h:head>
        <h:title>Simple Form</h:title>
        <model>
            <instance>
                <data id="collect197test">
                    <rep>
                      <text />
                    </rep>
                    <meta>
                        <instanceID/>
                    </meta>
                </data>
            </instance>
            <setvalue ref="/data/rep/text" event="odk-instance-first-load" value="'first'"/>
            <bind nodeset="/data/meta/instanceID" type="string" readonly="true()" calculate="concat('uuid:',uuid())"/>
        </model>
    </h:head>

    <h:body>
        <group appearance="field-list">
          <repeat nodeset="/data/rep">
              <input ref="/data/rep/text">
                  <label>Text</label>
              </input>
          </repeat>
        </group>
    </h:body>

</h:html>

Steps:

1. Load the form
2. Add a repeat
3. Only the first element should have a value of "first", but actually both do