canvas no antialias, powerPreference default (#2656)

frontend/src/components/starmap/StarMap.vue

@@ -1,6 +1,6 @@
 <template>
   <div class="canvas-container">
-    <canvas ref="canvas"></canvas>
+    <canvas ref="canvas" gl="{{powerPreference: 'default', antialias: false}}"></canvas>
   </div>
   <HoverInfo v-bind="hoveredStar" :show-more-button="true" />
 </template>