message: fix(plugins-stream-client): triggers panel icons style
diff: flex-direction: row;
  align-items: center;
  justify-content: center;
  + box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.2);
  + background-color: #b3d9ef;
  .bg-placeholder {
  fill: @color-trigger-bg-color;
  }
  .flogo-icon-trigger-margin {
  - margin: (18px - @trigger-icon-clickable-padding)
  - (18px - @trigger-icon-clickable-padding);
  + margin-top: (18px - @trigger-icon-clickable-padding);
  }
  }
  .trigger-content {
  margin-right: 3px;
  border-radius: 2px;
  - box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.2);
  - background-color: #b3d9ef;
  }
  .icon-svg__def {
  