text: Temporarily remove `assert_char_boundary` panics (#42919)

As discussed in the first responders meeting. We have collected a lot of
backtraces from these, but it's not quite clear yet what causes this.
Removing these should ideally make things a bit more stable even if we
may run into panics later one when the faulty anchor is used still.

Release Notes:

- N/A *or* Added/Fixed/Improved ...
6bea23e990Lukas Wirth committed on 11/17/2025, 10:20:45 PM· committed by GitHubparent98da1ea
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