修改默认合成选项为全部

Introduce/Record/INVideoExportController.swift

@@ -283,7 +283,7 @@ class INVideoExportController: BFBaseViewController {
 
 //        export.startExprot()
         // 默认保留录音合成
-        saveOnlyBtn.isSelected = true
+        saveAllBtn.isSelected = true
 
         DispatchQueue.main.asyncAfter(deadline: .now() + 0.2) { [weak self] in
             self?.exportNow()