添加loading

src/views/music-library/music-sheet/modal/music-platform.tsx

@@ -288,13 +288,14 @@ export default defineComponent({
         const onSubmit = async () => {
             try {
                 if(checkSubmitForms()) return
+                btnLoading.value = true
                 const params = getSubmitParams()
-
                 await musicSheetApplicationExtendSave(params)
                 message.success('保存成功')
                 emit('close')
                 emit('getList')
             } catch {}
+            btnLoading.value = false
         }
 
         /** 酷乐秀 加载曲目标签 */