Change PDFViewer package name
## Summary
<Summarize the improvement briefly and precisely>
We have to change PDF viewer package name to avoid conflicts.
## Description
**What is the current behavior?**
<What actually happens>
When a user try to update PDFViewer, it creates an issue. See https://gitlab.e.foundation/e/backlog/-/issues/1837
**What is the improved behavior?**
<What you should see instead>
Our PDFViewer build has its own package name
**What does it bring?**
<Why this improvement is needed>
## Examples
<Give the example of what users will be able to accomplish with the improvement>
## Validation
<List test case that will be run to validate that the issue is working as expected>
issue