### Steps to reproduce

1. Open the new Primerised Notification center 


### What is the buggy behavior?

* The width is 580px, which is wider than the 530px width we had previously.


### What is the expected behavior?

1. 580px Begin of the insertiontooEnd of the insertion Begin of the deletion toEnd of the deletion wide, let's test 550px.


### Screenshots and other files

**New Primirised split screen:**

<img class="op-uc-image op-uc-image_inline" src="/api/v3/attachments/128378/content"> Begin of the insertion

End of the insertion Begin of the deletion



End of the deletion **Old Angular split screen:**

**<img class="op-uc-image op-uc-image_inline" src="/api/v3/attachments/128379/content">**

### Environment information

**Edge**
**OpenProject 14.5**
Core build: [7e9005bc6a230fb0a9d29c1979228feb19e051a3](https://github.com/opf/openproject/commits/7e9005bc6a230fb0a9d29c1979228feb19e051a3)
Product version: [653f12eb9e06a12f506d855a8a7d35c350ea0c2a](https://github.com/opf/saas-openproject/commits/653f12eb9e06a12f506d855a8a7d35c350ea0c2a)

**Browser:**
Firefox, Mac (desktop)

**Language**
EN