[Bug] Contacts + Dialer words with "á" arent highlighted

[inson1]

Checklist

• I can reproduce the bug with the latest version.
• I made sure that there are no existing issues - open or closed - to which I could contribute my information to.
• I have read the FAQ and my problem isn't listed.
• I have taken the time to fill in all the required details. I understand that the bug report will be dismissed otherwise.
• This issue contains only one bug.
• I have read and understood the contribution guidelines.

Describe the bug
When searching for something .... "á", word is found, but not highlighted. Same with "ř" etc. (sometimes it works, but most of the time it doesnt)

Expected behavior
It should highlight the word even with this characters

Screenshots

Device info (please complete the following information):
Model: Redmi note 8 pro
OS: Android 11 MIUI 12.5.7
Version: 6.22.7

If somebody has better idea for title feel free to edit the post or post it below

^{Edited by @naveensingh to trigger image minimizer}

[inson1]

SimpleMobileTools/Simple-Contacts#1050