The PDF file created by createPDFStream becomes larger in size, and createWriteStream is very slow

### Version of node-canvas

4.0.0-rc3

### Version of node

v20.19.0

### What operating system does the problem occur on?

Linux

### Steps to reproduce

Create a large number of text-to-PDF conversions to achieve the desired result.

### Additional information/comments

_No response_