fix: removed outline books

[hassanmohamed2003]

Description

books in bookcase dont highlight in poltersense

Setting up testing environment

1. In the project window navigate to Project/Assets/Scenes and open the "FinalExam" scene.
2. Press Play.

Fix Review

Criteria:

• [x] interact with bookscase, active poltersense. Books aren't highlighted
• [x] when turning outlinechildren on it will highlight again
• [x] highlight disabled

  Checklist

  These checks should always be true for your pull request

• [x] My pull request is for one story/feature.
• [x] Every individual commit in this pull request is logical.
• [x] All code, documentation, commits and player seen texts are in English.
• [x] I have deleted unused / unnecessary code.
• [x] If my edits need a change in documentation, then I have updated the documentation.
• [x] All code is in correspondence with the code conventions.