Fix: Änderungen des Datums müssen verarbeitet werden

ui/src/routes/WorkingHours/Formular/EditByDay.svelte

@@ -1,4 +1,5 @@
 <script>
+    export let activeDate = null
     export let activeRecordList = []
     export let makeTimekeepingList = () => {}
 
@@ -11,7 +12,7 @@
     <fieldset name="record-data-by-day">
         <div>
             <label for="workingDay">Arbeitstag</label>
-            <input bind:value={activeRecordList[0].workingDay} type="date"
+            <input bind:value={activeDate} type="date" on:change={makeTimekeepingList}
                    id="workingDay" required pattern="\d\{4}-[0-1]\d-[0-3]\d\">
         </div>
         <div>