Change Records search should include results from title as well

Problem/Motivation

Change Records search should include results from title as well, currently only results match body text are being displayed.

For example there are no results for drupal_theme_rebuild as this string is present only in title but not in body hence no results are being displayed.

There is CR with string https://www.drupal.org/node/3348853 →

Seems it needs improvement.

Steps to reproduce

Serach for drupal_theme_rebuild in Change records → for Drupal core page

Proposed resolution

Add title field for search results index.

Remaining tasks

Update Index.

User interface changes

NA

API changes

NA

Data model changes

NA