Search result highlighting pixels are inaccurate

Hi! I was trying to implement a search UI and highlighting behaviour in my app using Lector, when i noticed that the exactMatch result and calculated highlight rect was being very inconsistent in terms of its offset/accuracy.

Tested the same behaviour with a few words in the `Custom Search` example from https://lector-weld.vercel.app/docs/code/search and was able to reproduce the highlight being off. Screenshots below:

Actual (search term `aggressive`):

Expected (using browser find/search):