🐛 Fix issues with UTC time handling

- Using `.setUTCHours` can cause the day to shift at specific times

src/components/substitution-list.vue

@@ -1,5 +1,5 @@
 <script setup>
-import { substitutions, loadingFailed } from "@/store";
+import { substitutions, loadingFailed, classFilter } from "@/store";
 import { getSubstitutionText, getSubstitutionColor } from "@/util";
 import { computed } from "vue";
 import InfoCard from "@/components/info-card.vue";
@@ -46,13 +46,19 @@ const substitutionsForDate = computed(() => {
       <span class="hour">{{ substitution.lesson }}</span>
       <div class="infos">
         <span class="text">{{
-          $t(getSubstitutionText(substitution), {
-            subject: substitution.change.subject,
-            class: substitution.class.join(", "),
-            teacher: substitution.teacher,
-            new_teacher: substitution.change.teacher,
-            room: substitution.change.room,
-          })
+          $t(
+            getSubstitutionText(
+              substitution,
+              !classFilter || classFilter == "none"
+            ),
+            {
+              subject: substitution.change.subject,
+              class: substitution.class.join(", "),
+              teacher: substitution.teacher,
+              new_teacher: substitution.change.teacher,
+              room: substitution.change.room,
+            }
+          )
         }}</span>
         <span class="notes" v-if="substitution.notes">
           {{ $t("timetable.notes") }} {{ substitution.notes }}