fix language switcher

src/components/interface_language_switcher/interface_language_switcher.vue

@@ -78,7 +78,6 @@ export default {
       },
       set: function (val) {
         this.setLanguage(val)
-        this.$emit('update:modelValue', val)
       }
     }
   },

src/components/settings_modal/tabs/general_tab.js

@@ -75,6 +75,12 @@ const GeneralTab = {
         label: this.$t(`post_status.content_type["${format}"]`)
       }))
     },
+    language: {
+      get: function () { return this.$store.getters.mergedConfig.interfaceLanguage },
+      set: function (val) {
+        this.$store.dispatch('setOption', { name: 'interfaceLanguage', value: val })
+      }
+    },
     ...SharedComputedObject()
   },
   methods: {