Merge branch 'paino_change' into dev

src/teacher/music/upload/index.tsx

@@ -616,7 +616,7 @@ export default defineComponent({
                         <>
                           <Upload
                             onUpdate:modelValue={val => (this.midiUrl = val)}
-                            accept=".mid"
+                            accept=".mid,.midi"
                           />
                           <div style={{ marginLeft: '8px' }}>
                             {this.fileName(this.midiUrl)}