fixes history loading slowly due to context switches

frontend/src/components/ValueLabel.vue

@@ -6,6 +6,7 @@ defineProps<{
     x: number;
     y: number;
     value: number;
+    class?: string;
 }>();
 
 const background_offset = computed(() => 5);
@@ -33,12 +34,13 @@ function update_value_text(text: string) {
 
 <template>
     <rect
+        :class="$props.class"
         :x="x - background_offset"
         :y="y - y_offset - background_offset"
         :width="label_width + background_offset * 2"
         :height="16 + background_offset * 2"
     ></rect>
-    <text ref="label-ref" :x="x" :y="y">
+    <text :class="$props.class" ref="label-ref" :x="x" :y="y">
         <NumericText
             :value="value"
             :max_width="6"