[Symmetric Translations] Default page title changes after unpublish in `content` entities
**Problem:**
When a page exists in both the default language and a translated language, unpublishing the default language page causes the title of the default language page to be replaced with the translated page's title.
**Expected Result:**
The default language page title should remain its original title after unpublishing. Only the publication status should change; the title must not be overwritten by the translated version.
**Steps to Reproduce:**
1. Add language 'French'
1. Create a canvas page , name it as 'Test Page'
1. Publish changes
1. Translate the page in french language - Provide title translation as 'French Page'
1. Navigate to canvas , open the page listing dropdown and Unpublish page 'Test Page'
1. Publish changes
1. Preview the French Page
1. Exit Preview
1. Observe the default page is titled as 'French Page'
issue