feat(edges): Use slot injection for custom connection lines

package/src/container/EdgeRenderer/EdgeRenderer.vue

@@ -52,11 +52,7 @@ export default {
           <slot v-if="edge.type" :name="`edge-${edge.type}`" v-bind="edgeProps"></slot>
         </template>
       </EdgeWrapper>
-      <ConnectionLine v-if="connectionLineVisible && sourceNode" :source-node="sourceNode">
-        <template #default="customConnectionLineProps">
-          <slot name="connection-line" v-bind="customConnectionLineProps"></slot>
-        </template>
-      </ConnectionLine>
+      <ConnectionLine v-if="connectionLineVisible && sourceNode" :source-node="sourceNode" />
     </g>
   </svg>
 </template>

package/src/container/TransformationPane/TransformationPane.vue

@@ -35,8 +35,7 @@ const transform = computed(() => `translate(${store.transform[0]}px,${store.tran
 <template>
   <div :key="`transformation-pane-${id}`" class="vue-flow__transformation-pane vue-flow__container" :style="{ transform }">
     <NodeRenderer v-if="store.getNodes.length" :key="`node-renderer-${id}`" />
-    <EdgeRenderer :key="`edge-renderer-${id}`">
-    </EdgeRenderer>
+    <EdgeRenderer :key="`edge-renderer-${id}`" />
     <slot />
   </div>
 </template>