remove single-line from vuetify config

Author: MoSchmidt

frontend/src/vuetify.config.ts

@@ -83,7 +83,7 @@ export default createVuetify({
   defaults: {
     global: { ripple: true },
     VTextField: { variant: 'outlined', density: 'comfortable', color: 'primary' },
-    VSelect: { variant: 'outlined', density: 'comfortable', singleLine: true },
+    VSelect: { variant: 'outlined', density: 'comfortable' },
     VBtn: { color: 'primary', rounded: 'lg' },
     VCard: { rounded: 'lg' },
     VDataTable: { density: 'comfortable' },