message: Remove unwanted rowspan on D3D12 sample mask
  * This messed up the grid outlines as it included another extra row that it
  shouldn't have.
diff: </property>
  </widget>
  </item>
  - <item row="2" column="7" rowspan="2">
  + <item row="2" column="7">
  <widget class="QLabel" name="sampleMask">
  <property name="font">
  <font>
  