Title Prefix getting added to Wiki Page Title every time Wiki Page is edited

[atn-prabhu]

Issue:
If you have configured to add a prefix to page titles through WebSite Settings, this prefix gets added multiple times in Wiki Page Title. This happens every time a Wiki Page is saved after editing.

How to recreate the issue:

• Set some prefix in the following setting

Website Settings > Landing Page > Title Prefix

• Create a wiki page and save. You'll notice that the Title Prefix we set earlier is now prefixed to the WIKI page title.
• Open the page by clicking ... > Edit Page
• Make some changes to the page content and save

Expected behaviour:
Only the changes you made get stored and the title remains the same

Actual behaviour:
The prefix gets added to the Wiki page title one more time with hypen as a separator