Merge branch 'iteration_1.3.4' into dev

src/teacher/music/upload/index.tsx

@@ -284,13 +284,13 @@ export default defineComponent({
           })
         }
       } catch (error) {}
-      this.submitLoading = false
 
       Toast('上传成功')
       setTimeout(() => {
         postMessage({
           api: 'back'
         })
+        this.submitLoading = false
       }, 800)
       console.log(vals)
     },