[Musicxml Export] - Measure rest should be reflected

The attached file shows various lengths of measure with full measure rests on either right or left hand. Musescore code shows this:

      <Rest>
        <durationType>measure</durationType>
        <duration>7/8</duration>
        </Rest>

However, Musicxml export shows only rest, not rest measure:

  <note>
    <rest/>
    <duration>7</duration>
    <voice>5</voice>
    <staff>2</staff>
    </note>

It should be:

  <note>
    <rest measure="yes"/>
    <duration>7</duration>
    <voice>5</voice>
    <staff>2</staff>
    </note>

Without this, braille transcription software will not know it's a full measure rest, and will count duration and output strange rests.