Hello, I want to customize the tooltip for the arcgis-expand button. Unfortunately, it doesn't work with calcite-tooltip. Does anyone have an idea?

<arcgis-expand position="top-right" mode="floating" id="Legende">
<calcite-tooltip label="Legende" reference-element="Legende">
<span>Legende</span>
</calcite-tooltip>
<arcgis-legend/>
</arcgis-expand>