Annotation test uses a PDF without annotations, while appropriate test results in segfault

Hey there, I noticed that the `test_page_annotations()` test provided in `src/pdf/page.rs` uses `test/files/dummy.pdf`. But that file does not have annotations, so of course the test passes. I have attached a test PDF I set up that should be more appropriate, I think, which I'm happy to PR into the existing test. Here it is: [annotated_paper.pdf](https://github.com/user-attachments/files/25995482/annotated_paper.pdf) On that note, I've been running into a `STATUS_ACCESS_ERROR` for a while when using PdfPage.annotations(), and, when I used the other test PDF in its place, I got the same segfault issue: ``` cargo test ``` ``` [...] test text_page::test::test_page_to_xml ... ok test text_page::test::test_text_page_cb_search ... ok test text_page::test::test_text_page_search ... ok error: test failed, to rerun pass `--lib` Caused by: process didn't exit successfully: `C:\Users\[...]\mupdf-rs\target\debug\deps\mupdf-dce67659a56d4a9b.exe` (exit code: 0xc0000005, STATUS_ACCESS_VIOLATION) note: test exited abnormally; to see the full output pass --no-capture to the harness. ``` This could just be a problem with my build, but I suppose updating the test is one way to find out for sure. **Environment info** ---------------------------------------------- ``` rustc -vV ``` ``` rustc 1.92.0 (ded5c06cf 2025-12-08) binary: rustc commit-hash: ded5c06cf21d2b93bffd5d884aa6e96934ee4234 commit-date: 2025-12-08 host: x86_64-pc-windows-msvc release: 1.92.0 LLVM version: 21.1.3 ``` ``` rustup show ``` ``` PS C:\Users\[...]\mupdf-rs> rustup show Default host: x86_64-pc-windows-msvc rustup home: C:\Users\[...]\scoop\persist\rustup\.rustup installed toolchains -------------------- stable-x86_64-pc-windows-msvc (active, default) active toolchain ---------------- name: stable-x86_64-pc-windows-msvc active because: it's the default toolchain installed targets: x86_64-pc-windows-msvc ```