Incorrect height is returned for certain pdf document

[jifang]

Describe the bug
When loading some pdf file (see attached), its size is supposed to be a 595.25 x 409. However, the page height of 841.875 is returned. The page width is correct.

example.pdf

To Reproduce
Steps to reproduce the behavior:

1. Load the attached pdf file

      final document = await pdfx.PdfDocument.openFile('${tempDir.path}/example.pdf');
      final page = await document.getPage(0);
      debugPrint('### page width: ${page.width}, height: ${page.height}');

Expected behavior
We are expecting 595.25 x 409 is returned. However the output is 595.25 x 841.875

flutter: ### page width: 595.275, height: 841.875

Screenshots
N/A

Smartphone (please complete the following information):

• Device: Macbook Pro M1
• OS: 14.6.1
• Version:
  2.6.0

Additional context
Here is the pdfinfo output

pdfinfo /Users/ji/Downloads/default.pdf                                                                                                                                          (base) 
Title:           Document
Producer:        openhtmltopdf.com
CreationDate:    Wed Aug 28 13:45:52 2024 CST
Custom Metadata: yes
Metadata Stream: no
Tagged:          no
UserProperties:  no
Suspects:        no
Form:            none
JavaScript:      no
Pages:           1
Encrypted:       no
Page size:       595.275 x 409 pts
Page rot:        0
File size:       75143 bytes
Optimized:       no
PDF version:     1.7