fix: camera scaling on scan

src/views/public/scanner/Scanner.vue

@@ -3,19 +3,20 @@
     <RouterLink :to="{ name: 'public-scanner-select' }" class="text-primary" @click="leave">
       Zurück zur Sessionauswahl
     </RouterLink>
-    <div class="relative flex flex-col gap-2 w-full grow overflow-hidden max-w-md mx-auto">
+    <div class="relative flex flex-col gap-2 w-full grow overflow-hidden mx-auto">
       <Spinner v-if="selectedCamera == undefined" class="absolute top-3 left-1/2 -translate-y-1/2" />
-      <qrcode-stream
-        class="grow"
-        :constraints="selectedCamera?.constraints"
-        :track="trackFunctionOptions[4].value"
-        :formats="barcodeFormats"
-        :paused="paused"
-        @error="onError"
-        @detect="onDetect"
-        @camera-on="onCameraReady"
-      />
-      <br />
+      <div class="grow w-full overflow-hidden">
+        <qrcode-stream
+          class="h-full w-full"
+          :constraints="selectedCamera?.constraints"
+          :track="trackFunctionOptions[4].value"
+          :formats="barcodeFormats"
+          :paused="paused"
+          @error="onError"
+          @detect="onDetect"
+          @camera-on="onCameraReady"
+        />
+      </div>
       <select v-model="selectedCamera">
         <option v-for="c in selecteableCameras" :value="c">{{ c.label }}</option>
       </select>