When using the search feature, if you search for a value like "TEST" and the actual data contains "test", the matched text is not only highlighted but is also converted to "TEST". This causes the original data to be modified in the view.

Expected behavior: The search should only highlight matching text (case-insensitive), but the underlying data and displayed text should remain unchanged. Only the highlight should be applied visually, not content replacement.

Steps to reproduce:

1. Open the search feature in the viewer.
2. Search for a value (e.g., "TEST").
3. Observe that all matches (e.g., "test") are converted to the search value ("TEST") instead of just being highlighted.