copy slide

After I copied the slide 500 times, I was prompted to repair it when I opened the PPT, but the content seemed to be fine. How can I avoid it?
```
@Test
void test() throws Exception {
try(XMLSlideShow ppt = new XMLSlideShow(Files.newInputStream(Paths.get("d:/1.pptx")))){
XSLFSlide template = ppt.getSlides().get(3);

int limit = 500;

for (int i = 0; i < limit; i++) {
XSLFSlide slide = ppt.createSlide(template.getMasterSheet()).importContent(template);
ppt.setSlideOrder(slide, i);

}
try(OutputStream os = Files.newOutputStream(Paths.get("d:/out.pptx"))){
ppt.write(os);
}
}
}
```

Reproduce the issue with the provided XMLSlideShow, XSLFSlide, createSlide/importContent, and write sequence, then inspect the generated out.pptx in PowerPoint. Done means copying the slide 500 times produces a presentation that opens without a repair prompt; no repository test file is named in the report.

Written by the indexing model from the issue text.