Fix type error - unused preSelect events

frontend/src/App.svelte

@@ -39,9 +39,7 @@
         <div style="height: 100%">
           <Graph
             tasks={t}
-            on:selectTask={(e) => { if (e.detail.type != "label") (location.hash = `#task/${e.detail.id}`)}}
-            on:preSelectTask={(e) => taskPanel.preSelect(e.detail) }
-            on:unPreSelectTask={(e) => taskPanel.unPreselect(e.detail)} />
+            on:selectTask={(e) => { if (e.detail.type != "label") (location.hash = `#task/${e.detail.id}`)}}/>
         </div>
       </TasksLoader>
     {/if}

frontend/src/Graph.svelte

@@ -54,15 +54,8 @@ import TaskDetailEditor from "./TaskDetailEditor.svelte";
     function eventHandler(hovering: CustomEvent<boolean>) {
       if (hovering.detail) {
         hoveredTask = task;
-        if (!selection.has(task) && !dragInProgress) {
-          selection.clear();
-          selection.add(task);
-          selection = selection;
-        }
-        eventDispatcher("preSelectTask", task);
       } else {
         if (hoveredTask?.id == task.id) hoveredTask = null;
-        eventDispatcher("unPreSelectTask", task);
       }
     }
     return eventHandler;